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Home CacheSleuth's main landing page — search bar, quick-action cards for the Multi Decoder, Wherigo Solver, Codes & Symbols, and Geocache Viewer, plus an inline coordinate converter, the geocaching quick search, and a rotating featured-tools panel. Open

Geocaching Quick Links Open the homepage with the sidebar switched into geocaching mode — direct links to your dashboard, hides, trackables, lists, friends, and other shortcuts on geocaching.com. Open

Geocaching Lingo Look up geocaching words, phrases, abbreviations, and acronyms. Open

Games Browse game caches and interactive puzzle pages created by CacheSleuth. Open

Contact Send questions, comments, or suggestions to CacheSleuth. Open

Privacy How CacheSleuth handles your data — translation, tool input, cookies, localStorage, and third-party services. Open

What's New A tour of the redesign and the new tools — dark mode, mobile-first layout, smarter search, translation support, and per-tool quality-of-life upgrades. Open

Report Translation Issues Submit corrections for incorrect or awkward machine translations on CacheSleuth. Open

Multi Decoder Paste cipher text and run 250+ decoders at once — Caesar, Vigenère, Atbash, Bacon, Polybius, Beaufort, Playfair, ADFGX, RSA, Morse, Base64, and dozens more — with optional keyword, alphabet, and number hints. Detects coordinates in multiple notations, surfaces possible plaintext words, and groups results by likelihood so the right answer rises to the top. Open

Multi Encoder Type a message, supply optional keys / pad / numbers, and the Multi Encoder produces every reversible cipher and variant we can generate (Caesar, Bacon in every style, Morse, Atbash, Vigenère, Base64, and more), each with a round-trip check so you know exactly what got encoded. Open

Geocache Viewer View Geocaching.com pages in a clean, organized layout that surfaces details normally hidden — coordinates in every notation, encrypted hints, log history, attributes, waypoints, images, and embedded HTML. Everything stays in your browser. Open

Wherigo Solver Drop a .gwc Wherigo cartridge and the solver decompiles it, scans the Lua source, zone data, and in-game messages, and surfaces the most likely final geocache coordinates with a confidence rating. Browse zones, media, messages, and decompiled Lua, plus built-in solvers for Reverse Wherigo cartridges (Waldmeister and day1976 formats). Open

Coordinate Converter Convert geocoordinates between Decimal Degrees, DDM, DMS, UTM, MGRS, Plus Codes, Geohash, Maidenhead, Reverse Wherigo, and many more, with map links and elevation lookup. Open

Reverse Wherigo (Waldmeister) Calculate coordinates from Waldmeister Reverse Wherigo codes, or create codes from cache coordinates. Open

Reverse Wherigo (day1976) Calculate coordinates from day1976 Reverse Wherigo codes, or create codes from cache coordinates. Open

Distance & Midpoint Calculate the distance, bearing, and midpoint between two GPS coordinates in common geocaching coordinate formats. Open

Projection Project a waypoint from a GPS coordinate using a bearing and distance, then view the projected point and midpoint. Open

Incomplete Coords Find possible geocache coordinates when one to three digits are missing from a DDM coordinate. Open

Batch Convert Coords Batch convert GPS coordinates between DDM, DD, DMS, UTM, MGRS, Plus Code, Reverse Wherigo, OSGB, GeoHex, Geo3x3, Maidenhead, NAC, Geohash, Mercator, and antipode. Open

Map Coordinates List Map a list of GPS coordinates and calculate segment and total distances between points. Open

2 Circles Intersect Calculate the intersection points of two circles from center coordinates and radii. Open

3 Circles Intersect Calculate the intersection point of three circles from center coordinates and radii. Open

Circle 3 Points Calculate the center point and radius of a circle passing through three GPS coordinates. Open

Center of Triangle Calculate the center, area, and perimeter of a triangle defined by three GPS coordinates. Open

Triangulation Find an unknown point using two known coordinate points and a bearing from each. Open

Line Circle Intersect Calculate where a line defined by two GPS points intersects a circle defined by a center point and radius. Open

2 Lines Intersect Find where two bearing lines intersect using two known coordinate points and a bearing from each. Open

Point Bearing to Line Calculate the intersection of a bearing projected from one coordinate point with a line segment defined by two other coordinate points. Open

4 Points Intersect Find where two geodesic lines intersect. Lines are drawn from A to B and C to D. Open

Cache Placement Helper Enter coordinates or use your current location to drop a draggable pin on the map. Click the map to reposition the pin. Open

Browse all codes Browse 250+ geocaching code tables in one place, including Pigpen, Braille, flags, fictional alphabets, symbols, and more. Open

View Code Builder Code image tool to display over 250 code tables, especially useful for geocache puzzle solving. Open

View Examples View every supported geocaching code table example in one place using custom text. Open

Additive Add a numeric key to each letter's position to shift it — a classical generalization of Caesar where the shift can vary per character. Custom alphabets supported. Open

ADFGX German WWI field cipher (1918) combining a 5×5 Polybius square (using only ADFGX as coordinates, easy to send by Morse) with a keyword-based columnar transposition. Open

ADFGVX Successor to ADFGX with a 6×6 square that includes digits 0–9. Used by the German army in 1918 until cracked by French cryptanalyst Georges Painvin. Open

Affine Each letter's position is multiplied by one key, then offset by another, modulo 26 — the affine map of monoalphabetic ciphers. Caesar is the special case where the multiplier is 1. Open

Albam Hebrew kabbalistic substitution cipher that splits the alphabet in half and swaps the corresponding letters of the two halves. A close cousin of Atbash. Open

ASCII-85 ASCII-85 and Base85 encoder and decoder for converting text to and from Adobe-style ASCII85. Open

Atbash Hebrew substitution cipher that reverses the alphabet — A↔Z, B↔Y, C↔X — appearing in the Book of Jeremiah. The simplest reciprocal cipher. Open

Autokey Polyalphabetic Vigenère variant that extends the keyword with the plaintext (or ciphertext) itself, so the running key never repeats. Configurable alphabets and keyword. Open

Bacon Francis Bacon's 1605 binary cipher hides a message inside an apparently innocent text using two letterforms (or two typefaces) per letter. Includes Bacon's distinct and merged variants plus puzzle-style key options. Open

Beaufort Reciprocal Vigenère variant where the same operation encrypts and decrypts. Named after Admiral Sir Francis Beaufort, who based it on Giovanni Sestri's earlier work. Open

Variant Beaufort Close cousin of Beaufort that reverses the subtraction direction (key minus plaintext). Used on Confederate-era cipher disks during the American Civil War. Open

Bifid Felix Delastelle's fractionating cipher: each letter splits into two coordinates on a 5×5 Polybius square, coordinates are interleaved across a period, and read back as new letters. Open

Burrows-Wheeler Reversible block-sorting transform that rearranges text into runs of similar letters. Used inside the bzip2 compressor and as a puzzle scrambler that decodes cleanly back. Open

Caesar Box Simple transposition that writes the plaintext into a rectangular grid row by row, then reads it back column by column. Quick to spot when text length is a perfect square. Open

Carbonaro Italian 19th-century swap cipher used by the Carbonari secret society in the lead-up to Italian unification, pairing letters around a central pivot. Open

Chaocipher John F. Byrne's 1918 two-disk cipher in which both alphabets permute themselves after every letter. Byrne offered cash prizes for breaking it; the algorithm wasn't published until 2010. Open

Columnar Transposition Plaintext is written into a grid below a keyword, then read out column by column in the order given by the keyword's letter ranks. Configurable padding and alphabet. Open

Double Transposition Columnar transposition applied twice with two different keywords. Used by Allied and Axis intelligence services through World War II for medium-grade traffic. Open

Enigma (M3) German WWII rotor machine simulator: pick rotors I–VIII, set ring positions, choose a reflector, and define plugboard pairs. The same settings encrypt and decrypt. Open

Foursquare Felix Delastelle's digraph cipher that operates on letter pairs using four 5×5 squares — two filled with a keyed alphabet, two with the standard alphabet. Open

Fractionated Morse Plaintext is converted to Morse, regrouped in threes (with separators), then each three-symbol group is looked up in a keyed alphabet. Used by US forces in World War I. Open

Gronsfeld Vigenère with a numeric key (digits 0–9) instead of a letter keyword — each plaintext letter shifts by the matching digit. Supports autokey mode and custom alphabets. Open

Hill Lester Hill's 1929 polygraphic cipher: plaintext blocks are multiplied by a 2×2 matrix key modulo 26, the first cipher to operate on more than three letters at a time. Open

Kamasutra One of the earliest substitution ciphers, described in the 4th-century Sanskrit Kama Sutra. The 26 letters are paired so each letter encrypts to its partner and vice versa. Open

Keyboard Cipher Shift each letter to a neighbor on a physical keyboard layout — left, right, up, or down. Supports QWERTY, AZERTY, and QWERTZ layouts. Open

Keyed Caesar Caesar shift built on a keyed alphabet: the keyword's unique letters appear first, then the rest of the alphabet, and the whole thing is rotated. Open

Multiplicative Each plaintext letter's position is multiplied by a key (coprime with 26) modulo 26 — a close cousin of Caesar that scrambles instead of just shifting. Open

Nihilist Russian Nihilist cipher combining a Polybius square with a numeric keyword. Each plaintext letter and each keyword letter are converted to two-digit Polybius coordinates and added together to produce the ciphertext. Open

One Time Pad The only mathematically unbreakable cipher when the key is truly random, as long as the message, and used exactly once. Generate a fresh pad or supply your own. Open

Pizzini Italian Renaissance cipher developed by Pope Innocent X's secretary Matteo Argenti and named after the Pizzini family — letters map to numbered positions in a keyed grid. Open

Playfair Charles Wheatstone's 1854 digraph cipher worked on letter pairs using a keyed 5×5 grid. Adopted by the British in the Boer War and World War I. Open

Pollux Morse-based cipher in which dots, dashes, and separators are each replaced by one of several substitute characters, masking the underlying Morse pattern. Open

Polybius Square Each letter is encoded as the row/column coordinates of its position in a 5×5 (letters) or 6×6 (letters + digits) grid. Supports keyed alphabets and custom coordinate labels. Open

Porta Key Giovanni Battista della Porta's 1563 reciprocal polyalphabetic cipher. The keyword chooses one of 13 alphabet pairings, and the same operation encrypts and decrypts. Open

Rail Fence Write the plaintext zig-zagging down and up across a chosen number of rails, then read it off row by row. Configurable rail count and starting offset. Open

Rot / Caesar Shift each letter by a chosen amount, with one-click presets for ROT13, ROT5, ROT18, and ROT47 covering letters, digits, and the full printable ASCII range. Open

Rotation Grid Rotate text written into a grid 90° left or right — handy for puzzle text laid out in non-standard reading orders. Configurable column count and padding. Open

Rot Special Caesar-style rotation that lets you choose exactly which characters get shifted and which pass through untouched. Useful for puzzles that mix cipher and plain text. Open

Route Transposition Writes the plaintext into a grid and reads it back along a chosen path — spiral, diagonal, or zig-zag — instead of plain columns. Open

Running Key Vigenère-style cipher where the key is a long passage of natural text (a book, a poem) rather than a short repeated keyword, defeating standard Kasiski analysis. Open

Scytale Ancient Spartan transposition cipher: text wrapped around a cylinder of a specific diameter, then unwrapped, scrambles into a regular column rotation. Open

Straddle Checkerboard Soviet-era fractionating cipher mapping common letters to single digits and rare ones to two-digit codes. Often used as an additive over a one-time pad in VIC-style ciphers. Open

Substitution Map each plaintext letter to a custom target letter using a keyed alphabet — the foundation under almost every monoalphabetic cipher in this list. Open

Trifid Felix Delastelle's three-dimensional extension of Bifid. Each letter gets three coordinates from a 27-character cube, interleaved across a period before being read back. Open

Trithemius Johannes Trithemius's 1508 progressive Caesar — each letter shifts by one more than the previous. The first published polyalphabetic cipher and the direct ancestor of Vigenère. Open

Übchi German WWI double columnar transposition variant. Famously broken by French cryptanalysts in 1914 within weeks of its introduction. Open

Vigenère The classic 1553 polyalphabetic cipher: each plaintext letter is Caesar-shifted by the corresponding letter of a repeating keyword. Considered unbreakable for three centuries. Open

Vic Soviet KGB hand cipher used by spy Reino Häyhänen in the 1950s — combines a straddling checkerboard, two transpositions, and a daily key. The strongest hand cipher ever fielded. Open

Abaddon Geocaching code that maps each letter to a unique three-symbol group. Supports the canonical alphabet, custom carriers, or auto-detected three-character patterns. Open

Backslash Three-character code built from forward slash, pipe, and backslash symbols. Each letter is encoded as a group of three; supports custom carriers and auto-detection. Open

Baudot Murray The 5-bit telegraph codes that preceded ASCII — ITA1 (Baudot) on early teleprinters and ITA2 (Baudot–Murray) on Western Union and TWX networks. Open

Brainf*ck & Ook! Convert between text, Brainf*ck, Ook!, and Short Ook! code, with a small interpreter. Open

Chinese Code Geocaching code that represents each letter as a small grid of dashes and pipes — visually similar to Chinese hanzi strokes, hence the name. Open

Clock Code Encodes letters as clock-face hours with AM/PM markers and "00" as a word separator. Often appears in geocaching puzzles using clock imagery. Open

Colored Squares Create Colored Squares Code blocks with configurable colors and optional number labels. Open

Cow Convert text to COW code and execute COW programs back into text. Open

Decabit Ten-bit punched-card-style code where each character is a binary string. Output can be ASCII text or the equivalent decimal numbers. Open

DTMF DTMF (Dual-Tone Multi-Frequency) maps each phone-keypad press to a pair of audio frequencies. Only the 16 keypad characters are valid input: digits 0-9, letters A-D, *, and #. Any other character in the plaintext (letters E-Z, spaces, punctuation) is silently dropped. Open

Dvorak ↔ Qwerty Convert text typed on one keyboard layout as if it had been typed on the other (QWERTY ↔ Dvorak). Useful when puzzle text was prepared on the wrong layout. Open

Enclosed Areas Count enclosed areas in uppercase letters, lowercase letters, and numbers with open or closed 4 handling. Open

Five Needle Telegraph Cooke and Wheatstone's 1837 telegraph used five magnetic needles pointing left or right to spell out one of 20 letters across two wires. Open

GoldBug The substitution cipher from Edgar Allan Poe's 1843 short story "The Gold-Bug," where the buried-treasure cryptogram is solved by frequency analysis on the page. Open

Hodor Translates each letter to a unique syllable in the Hodor language from HBO's Game of Thrones, where the character can only say his own name. Open

Kenny Three-character syllabic code based on the muffled speech of Kenny McCormick from South Park, mapping each letter to a sequence of m/f/p sounds. Open

Letters ↔ Numbers Convert letters to numbers and numbers back to letters using A=1 through Z=26. Open

Morse International Morse code with optional puzzle variants: reverse the sequence, swap dots and dashes, or both — common transformations in mystery caches. Open

UnMorse Decode run-on Morse code without separators by branching possible letter groupings and exploring viable translations. Open

Nak Nak Encode text to Nak Nak code and decode Nak syllables back to text. Open

NATO Alphabet The NATO phonetic alphabet (Alpha, Bravo, Charlie…) used in radio communication to spell out letters unambiguously over noisy channels. Open

Number Pad Lines Convert letters or keypad line number paths into Number Pad Lines images. Open

PLANET Barcode PLANET (Postal Alpha Numeric Encoding Technique) maps each digit 0-9 to a 5-bar short/tall (i/I) pattern, framed by tall bars. Auto-detects two non-standard symbols (e.g. ./|, a/b, x/o) and tries both orientations. Open

POSTNET Barcode POSTNET (Postal Numeric Encoding Technique) maps each digit 0-9 to a 5-bar short/tall (i/I) pattern, framed by tall bars. Auto-detects two non-standard symbols (e.g. ./|, a/b, x/o) and tries both orientations. Open

Quadoo A nine-segment digital display alphabet — think calculator-style segments extended to cover the full alphabet. Includes matching symbol images for each character. Open

Qwerty Coordinates Convert Qwerty keyboard characters to row and column coordinate pairs. Open

Qwerty Shifter Shift letters, numbers, and optional special characters across Qwerty keyboard rows. Open

Seven-Segment Display Encode and decode strings written in segment-display notation. Each character is described by the set of segment labels (A, B, C, …) that are lit. Supports 7-, 9-, 14-, and 16-segment displays. Open

Slash and Pipe Code in which each letter is encoded as a group of slashes and pipes ( / and | ). A common building block in geocaching cipher puzzles. Open

Tap / Knock Convert Tap Code between letters, numeric row-column pairs, and dot groups. Open

Tomtom Drum-language code that uses forward slashes and backslashes to represent letters as drumbeat patterns — adapted from African talking-drum traditions. Open

T9 Decoder Find dictionary words from T9 predictive text digit sequences. Open

Vanity Old-style mobile phone keypad text input: 2=A, 22=B, 222=C, 3=D, etc. Decodes from repeated key presses, key/position pairs, or directional sequences. Open

ASCII / Dec / Bin / Hex / Oct Convert text and single characters between ASCII, decimal, binary, hexadecimal, and octal — type into any field and the others update live. Open

Barcode Numbers Barcode number pattern converter for digits 0 through 9. Open

Base Conversion Convert integers between bases 2 through 62. Open

Base32 Encode and decode text using the standard RFC 4648 Base32 alphabet (A–Z, 2–7). Often seen in TOTP secrets, QR codes, and DNS-safe identifiers. Open

Base58 Encode and decode text using Base58. Choose between the Bitcoin alphabet (123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz) and the Flickr alphabet (lowercase before uppercase). Base58 omits visually ambiguous characters like 0, O, I, and l. Open

Base64 Base64 encoder and decoder for text. Open

Clock Angle Calculate the angle between the hour and minute hands for any time, or find every time that matches a given angle. Open

Digital Root Digital root calculator using several letter value systems. Open

Euler-Mascheroni (γ) Euler-Mascheroni constant digit lookup and search helper. Open

Euler Number (e) Euler number digit lookup and search helper. Open

Fibonacci Fibonacci number generator and lookup tool. Open

Fraction Approximator Decimal to fraction approximation helper. Open

GC Number ↔ GC ID Convert between geocache GC codes (e.g. GC2J3WZ) and the underlying numeric cache IDs that geocaching.com uses internally. Open

Golden Ratio (φ) Golden ratio digit lookup and search helper. Open

Lucas Numbers Lucas number generator and lookup tool. Open

Numbers in Alphabetical Order Four conversions in one tool: alphabetical index → number word, number word → alphabetical index, number → English spelling, and spelled-out English → integer. The alphabetical order uses the standard 0–100 ranking where eight = 1, eighteen = 2, eighty = 3, and zero = 101. Open

Numbers To Words Convert numbers to written English words, or parse spelled-out numbers back to digits. Open

Numerology Reduce each letter of a word or phrase to a digit using the Pythagorean (1–9 cycle), Pythagorean (1–0 cycle), or Chaldean systems, then sum and reduce to a single-digit numerology value or digital root. Open

Pi (π) Pi digit lookup and search helper. Open

Prime Numbers Prime number list and factorization helper. Open

Pythagoras's Constant (√2) Square root of 2 digit lookup and search helper. Open

Roman Numerals Roman numeral converter for values 1 through 3999. Open

Scrabble Scorer Scrabble word score calculator. Open

Shadoks Numbers Shadoks number converter using GA BU ZO MEU. Open

Temperature Converter Temperature conversion calculator. Open

Theodorus' Constant (√3) Square root of 3 digit lookup and search helper. Open

Time Decimal Convert clock times to total seconds since midnight and the percentage of the day elapsed. Useful for puzzles that encode coordinates as times. Open

Triangle Calculator Triangle side angle area and perimeter calculator from three known attributes. Open

UTF-8 Tool UTF-8 text to hex encoder and decoder. Open

Unit Converter Common unit conversion calculator. Open

Vanity Values Phone keypad vanity value calculator. Open

Word Values Word value calculator using multiple letter value systems. Open

Text Manipulator Manipulate text for puzzle solving with case changes, filtering, reversing, grouping, ROT transforms, replacement, file loading, saving, and content analysis. Open

Frequency Analysis Analyze character frequencies, word counts, letter counts, number counts, and symbol counts in a body of text. Open

Decision Tree An interactive flowchart that walks through clues in puzzle text — letter patterns, character sets, common encodings — and points you toward the most likely solver. Open

HTML Encoder Encode HTML or text into JavaScript document.write output. Open

Unicode Characters Unicode character lookup tool that maps each character in a message to its Unicode code point and name. Open

Cache Page Creation Copyable HTML examples for creating geocache pages, including paragraphs, line breaks, centering, text styling, links, images, sizing, inline styling, and divs. Open

Bookmarklets Bookmarklets that shortcut coordinate conversion, GC/TB lookup, CacheSleuth search, text manipulation, geocaching user search, keyword search, and GeoCheck captcha entry. Open

Exif Reader Upload an image file to read EXIF data. Supports JPEG, PNG, WebP, TIFF, HEIC/HEIF, AVIF and limited GIF support. Open

ISBN Tool Convert ISBN-10 to ISBN-13 or ISBN-13 to ISBN-10, and look up ISBN details through Open Library with Amazon and Google fallback searches. Open

Hash Functions Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA-512/224, and SHA-512/256 hashes for text. Open

Resistor Color Code Decode resistor color bands into resistance and tolerance values using the standard color code table. Open

Periodic Table Convert element atomic numbers to symbols and names, or convert symbols and names back to atomic numbers. Open

Spelling With Elements Spell words with chemical element symbols and view matching periodic table tiles. Open

DNA Translator Translate text to and from CacheSleuth DNA code triplets using A, C, G, and T. Open

Draw A Stickman Decode and create Draw A Stickman Episode 1 custom message URLs. Open

Pig Latin Convert a plain English message into Pig Latin. Open

Sudoku Solver HTML Sudoku solver with hints, allowed values, singles, undo, reset, and serial puzzle loading. Open

Flip A Coin Flip a coin, guess heads or tails, and track wins, losses, and choices. Open

Roll The Dice Roll one or more six-sided dice with running totals. For chance-driven puzzles or just for fun. Open

QR Code Scanner Upload a QR code image file and scan the encoded text. Open

QR Code Generator Create a custom QR code with configurable text, size, quality level, foreground, and background. Open

Barcode Generator Create barcodes in Code 128, Code 39, and EAN-13 formats with configurable size and colors. Open

Gallifreyan Generator Translate text into Circular Gallifreyan and save the generated artwork as an image. Open

Tupper's Formula Encode and decode Tupper's self-referential formula. Convert text, drawings, or images into the integer k for geocaching puzzle caches, and decode k back into a bitmap. Open

Helpful Links Browse external puzzle, cipher, coordinate, checker, app, and geocaching reference links. Open

Geocaching Lingo Look up geocaching words, phrases, abbreviations, and acronyms. Open

Games Browse game caches and interactive puzzle pages created by CacheSleuth. Open

Geocaching Dashboard Your main geocaching.com landing page with recent activity, friend logs, and account shortcuts. External

Message Center Read and reply to direct messages from cache owners and other geocachers. External

Your Public Profile View your profile the way other geocachers see it — finds, hides, souvenirs, and stats. External

Statistics Personal find stats — totals, types, sizes, the difficulty/terrain matrix, and milestones. External

Project-GC Statistics Advanced Project-GC dashboards — challenges, badges, charts, and deep analytics on your finds. External

Souvenirs Souvenirs you've earned from events, milestones, and special promotions. External

Notifications (PMO) Set up email alerts for new caches matching your filters. Premium membership required. External

Pocket Queries (PMO) Build, schedule, and download GPX queries of caches near a point or matching a filter. Premium membership required. External

User Routes (PMO) Draw map routes and pull caches along the path — handy for road trips. Premium membership required. External

Owner Dashboard Manage caches you own — health checks, recent logs, and maintenance alerts in one place. External

Your Owned Hides List of every cache you've published, with status and recent log activity. External

Your Drafts Saved field notes and unfinished log drafts ready to be posted. External

Recently Viewed The last cache pages you opened on geocaching.com — quick way back to one you were just looking at. External

Your Logs Every log you've written, filterable by type and sortable by date. External

Hide New Cache Start the form to publish a new geocache listing. External

Unpublished Hides Caches you've submitted that are still pending reviewer approval or revision. External

Owned Trackables Trackables (geocoins, travel bugs) registered to you, with their current locations and recent moves. External

Your Inventory Trackables currently in your possession that are waiting to be moved to a cache. External

Trackable Logs Every log you've written on a trackable — discovered, grabbed, retrieved, or dropped. External

Your Collection Trackables you've collected as a personal record. Items in the collection are no longer in play. External

Your Lists Bookmark lists, ignore lists, and watchlists you've created on geocaching.com. External

Your Watchlist Caches you're watching for new logs and updates. External

Your Favorites Caches you've awarded a favorite point to. External

Leaderboard Top finders, hiders, and trackable movers across your friends and globally. External

Your Friends Manage your geocaching friends list — add, remove, or browse mutual finds. External

Find a Player Look up another geocacher by username to view their profile, finds, and hides. External

Rumkin Cipher Tools Wide range of online cipher tools. External

GeocachingToolBox Variety of tools specifically created for Geocachers. External

MultiSolver Attempts to automatically solve a variety of ciphers. External

Cryptii Multiple tools that can be chained together. External

dCode.fr Tons of cipher tools. External

Geocaching Australia Toolbox Range of online cipher tools. External

Anagram-Solver.net Fantastic anagram solver. External

QuipQuip Cryptogram solver. External

Whats This Word Crossword solver, dictionary, word finder. External

Snarkles.net Tool for character conversions. External

Practical Cryptography Frequency analysis tools. External

Geocachers Compass Puzzle resources. External

Wordplays Anagram solver. External

D'Ni Number Calculator From the MYST game series, the D'Ni number system uses Base 25 along with special symbols. External

Geo Javawa Wide variety of mapping tools. External

Hamster Map Plot lat/lon on a map, convert coordinates. External

GeoLifeLine Calculate distance and bearing. External

GeoLifeLine Project a waypoint. External

GeoLifeLine Convert coordinates. External

Boulter Convert coordinates. External

Boulter Coordinate distance calculator. External

GPS Visualizer Coordinate calculators and distance tools. External

GPS Visualizer Make a Google map from a GPS file. External

GeoMidPoint Calculator Calculate the midpoint of coordinates & other mapping tools. External

WolframAlpha Intelligent calculator that handles a variety of human language equations. External

Angio Primes Allows searching through 200 million digits of pi. External

Subidiom Primes Allows searching through 2 billion digits of pi! External

BigPrimes Everything you ever wanted to know about a number. External

Convert xy Number base conversion 2 - 64. External

Convert xy Calculate area of a circle. External

DarkByte Binary, Hexadecimal, Decimal, Base64 converter. External

Magma Big math calculator. External

Zompist Numbers from 1 to 10 in over 5000 languages. External

GeoCheck.org Geocaching coordinate checker. External

Certitude Geocaching coordinate checker. External

GeoChecker Geocaching coordinate checker. External

Groundspeak Geocaching App The official Groundspeak Geocaching app (Free). External

Cachly A geocaching app with access to Geocaching.com (Paid). External

Wherigo The Wherigo app for iPhone. External

Groundspeak Geocaching App The official Groundspeak Geocaching app (Free). External

c:geo An Open source Geocaching app for Android which links to Geocaching.com (Free). External

Geooh A Geocaching app for Android that includes access to Geocaching, your profile and has a built in Wherigo app. Free but requires premium geocaching access. External

WhereYouGo The Wherigo app for Android (Free). External

GSAK (Geocaching Swiss Army Knife) Very powerful database software to manage geocaches, PQs, GPS exports, and more. External

FizzyView View your "My Finds" file as a D/T grid, filtered by any combination of cache name (search on one or multiple terms), cache owner, locations, sizes, types, attributes, date placed, and date found. External

FizzyCalc Windows application that allows simple conversion of coordinates to various formats. Also does high-accuracy distance calculations and projections using the Vincenty method for calculating distances on an ellipsoid. External

Logical Solver Tool to solve logic puzzles easily. Open

Gallifreyan Translator Tool to create Circular Gallifreyan. Open

How To Read Gallifreyan A PDF guide on how to read Circular Gallifreyan. Open

Geocaching Rescue Logs Printable triple rescue cache log. External

Jeffrey's Exif Viewer View exif data in images. External

Metapicz Exif Viewer View exif data in images. External

Project GC Statistics and tools for geocachers and caches all around the world. External

Project GC Profile Stats Dynamically updating stats for your Geocaching Profile. External

Project GC Map Compare A map where you can compare your finds with others. A helpful tool if you want to plan a route together with a friend. External

Project GC Challenge Checkers Here you can check if you have completed some of the challenge caches around the world. External

Project GC Find Bad Logs Find those caches that you have accidentally logged more than once. External

Project GC Forgotten FTFs Lists caches that you have found on the first day that someone else found it on, and that are not listed as FTF on Project-GC which you may have forgotten to mark as FTF. External

Project GC TB Rescue Lists trackables on a map with a mission to help owners of trackables get their trackables moved when they seem to be stuck in a geocache. External

Project GC Custom Filters This is a customized process but is extremely useful. Here's how: Click New. Give it a name and click Add. Select the Attributes tab, find the attribute you want, select it and click Add as required. Click Add to filter, then Save. Go to Map Compare. From the Add filter dropdown, select Custom filter. In the Custom filter dropdown, select the filter you just created. Add other filters as appropriate and click Filter. External

Let's Play A Game: 0h h1 Edition GC95PGH: Interactive CacheSleuth game cache. Open

Let's Play A Game: 2048 Edition GC70Z3X: Interactive CacheSleuth game cache. Open

Let's Play A Game: Alien Invasion Edition GC764XX: Interactive CacheSleuth game cache. Open

Let's Play A Game: Wordle Edition GC9MH7F: Interactive CacheSleuth game cache. Open

Let's Play A Game: WORLDle Edition GC9NK2Z: Interactive CacheSleuth game cache. Open

Let's Play A Game: Run T-Rex, Run! GC8Y9GV: Interactive CacheSleuth game cache. Open

Let's Play A Game: Sedecordle Edition GC9DH7V: Interactive CacheSleuth game cache. Open

Let's Play A Game: Quordle Edition GC9NYRY: Interactive CacheSleuth game cache. Open

Let's Play A Game: Murdle Edition GC9RJTY: Interactive CacheSleuth game cache. Open

Let's Play A Game: Battleship! GC70HPT: Interactive CacheSleuth game cache. Open

Let's Play A Game: BB-Tan Edition GC91T9A: Interactive CacheSleuth game cache. Open

Let's Play A Game: Circles Edition GC76H28: Interactive CacheSleuth game cache. Open

Let's Play A Game: Clumsy Bird Edition GC74KX4: Interactive CacheSleuth game cache. Open

Let's Play A Game: Connections Edition GCAFEAY: Interactive CacheSleuth game cache. Open

Let's Play A Game: Crossy Road Edition GCA6Z5N: Interactive CacheSleuth game cache. Open

Let's Play A Game: DNF Assault GC92P9M: Interactive CacheSleuth game cache. Open

Let's Play A Game: Duck Hunt Edition GC72D27: Interactive CacheSleuth game cache. Open

Let's Play A Game: Hextris Edition GC8N541: Interactive CacheSleuth game cache. Open

Let's Play A Game: Mastermind Edition GC72CP0: Interactive CacheSleuth game cache. Open

Let's Play A Game: Mathler Easy Edition GC9RNZ8: Interactive CacheSleuth game cache. Open

Let's Play A Game: Mathler Edition GC9RNZ9: Interactive CacheSleuth game cache. Open

Let's Play A Game: Mathler Hard Edition GC9RNZB: Interactive CacheSleuth game cache. Open

Let's Play A Game: Maze Runner Edition GC6Y6KQ: Interactive CacheSleuth game cache. Open

Let's Play A Game: Memory Swap Edition GC71VCA: Interactive CacheSleuth game cache. Open

Let's Play A Game: Minesweeper Edition GC71B5F: Interactive CacheSleuth game cache. Open

Let's Play A Game: Number Slider Edition GC73A7J: Interactive CacheSleuth game cache. Open

Let's Play A Game: Pac-Man Edition GC75VE2: Interactive CacheSleuth game cache. Open

Let's Play A Game: Peg Game - Norman Edition GC77KX2: Interactive CacheSleuth game cache. Open

Let's Play A Game: Picture Sudoku Edition GC764YK: Interactive CacheSleuth game cache. Open

Let's Play A Game: Simon Says Edition GC732GP: Interactive CacheSleuth game cache. Open

Let's Play A Game: Tetris Edition ▝▙▝▛▝▜ ▟▘▛▘▉ GCA8816: Interactive CacheSleuth game cache. Open

Let's Play A Game: Tetris Revenge! GC9R15V: Interactive CacheSleuth game cache. Open

Let's Play A Game: Cache Wheel Edition GC752JC: Interactive CacheSleuth game cache. Open

Let's Play A Game: The Invisibles GC98CEB: Interactive CacheSleuth game cache. Open

Rebus GC83HWJ: Interactive CacheSleuth game cache. Open

Brain Teaser #6 GC8JHVY: Interactive CacheSleuth game cache. Open

Super CacheOut GC7TQVQ: Interactive CacheSleuth game cache. Open

Draw A Stickman GC7K8Q5: Interactive CacheSleuth game cache. External

Let's Play A Game: 🤔 Emoji Charades Edition GCBAE90: Interactive CacheSleuth game cache. Open

Let's Play A Game: ColorFlood Edition GCB4J0M: Interactive CacheSleuth game cache. Open

Let's Play A Game: Three Truths & a Lie GCB9QC4: Interactive CacheSleuth game cache. Open

Let's Play A Game: FoxiMax Edition GCB4J0H: Interactive CacheSleuth game cache. Open

Let's Play A Game: Draw A Perfect Circle GCBDC63: Interactive CacheSleuth game cache. Open

Let's Play A Game: Concentration Edition GCB4TX6: Interactive CacheSleuth game cache. Open

25-Pair Color Code Reference table for 25-Pair Color Code. Open

Alphabet Code Reference table for Alphabet Code. Open

American Sign Language Reference table for American Sign Language. Open

American Sign Language - Color Reference table for American Sign Language - Color. Open

Ancient Hylian Reference table for Ancient Hylian. Open

Andorian Reference table for Andorian. Open

Anti-Life Reference table for Anti-Life. Open

Antiker Reference table for Antiker. Open

Arcadian Reference table for Arcadian. Open

Astronony Symbols Reference table for Astronony Symbols. Open

Ath Reference table for Ath. Open

Atlantis Reference table for Atlantis. Open

Aurebesh Reference table for Aurebesh. Open

Autobot Reference table for Autobot. Open

Ba'ku Reference table for Ba'ku. Open

Baal Reference table for Baal. Open

Baal Diagonal Reference table for Baal Diagonal. Open

Babylonian Numerals Reference table for Babylonian Numerals. Open

Backslash Code Reference table for Backslash Code. Open

Bacon Code Reference table for Bacon Code. Open

Ballet Reference table for Ballet. Open

Barcode 39 Reference table for Barcode 39. Open

Bearded Men Reference table for Bearded Men. Open

Birds On A Wire Reference table for Birds On A Wire. Open

Blokscript Reference table for Blokscript. Open

Blork Reference table for Blork. Open

Blox Reference table for Blox. Open

Book Reference table for Book. Open

Box Reference table for Box. Open

Brahmi Reference table for Brahmi. Open

Braille Reference table for Braille. Open

Breath of the Wild Reference table for Breath of the Wild. Open

Builder Code - Marvel Reference table for Builder Code - Marvel. Open

Caps Reference table for Caps. Open

Centauri Reference table for Centauri. Open

Chappe Reference table for Chappe. Open

Chappe 2 Reference table for Chappe 2. Open

Chappe 3 Reference table for Chappe 3. Open

Chinese Code Reference table for Chinese Code. Open

Chocolate Reference table for Chocolate. Open

Circle Reference table for Circle. Open

Circles Reference table for Circles. Open

Circular Glyphs Reference table for Circular Glyphs. Open

Cistern Reference table for Cistern. Open

Clutter Reference table for Clutter. Open

Code S Reference table for Code S. Open

Codescript Reference table for Codescript. Open

Color Reference table for Color. Open

Color Music Reference table for Color Music. Open

Colored Squares Reference table for Colored Squares. Open

ColorHoney Reference table for ColorHoney. Open

ColorTokki Reference table for ColorTokki. Open

Conway Reference table for Conway. Open

Covenant Reference table for Covenant. Open

Cybertronic Reference table for Cybertronic. Open

D'Ni Letters Reference table for D'Ni Letters. Open

D'Ni Numbers Reference table for D'Ni Numbers. Open

Dada Urka Reference table for Dada Urka. Open

Dagger Reference table for Dagger. Open

Dancing Men Reference table for Dancing Men. Open

Dead Spy Scrawls Reference table for Dead Spy Scrawls. Open

Decepticon Reference table for Decepticon. Open

Demon Script Reference table for Demon Script. Open

Devanagari Numerals Reference table for Devanagari Numerals. Open

DLI Reference table for DLI. Open

DNA Reference table for DNA. Open

Doctor Reference table for Doctor. Open

Doop Reference table for Doop. Open

Dorabella Reference table for Dorabella. Open

Dots/Stipplecode Reference table for Dots/Stipplecode. Open

Dotsies Reference table for Dotsies. Open

Draconic Reference table for Draconic. Open

Dragon - Skyrim Reference table for Dragon - Skyrim. Open

Dragon Runes Reference table for Dragon Runes. Open

Drazi Reference table for Drazi. Open

Dwemeri Reference table for Dwemeri. Open

Efkolia Reference table for Efkolia. Open

Egyptian Hieroglyphics Reference table for Egyptian Hieroglyphics. Open

Elia Reference table for Elia. Open

Enochian Reference table for Enochian. Open

Etruscan Reference table for Etruscan. Open

Fabrini Reference table for Fabrini. Open

Fakoo Reference table for Fakoo. Open

Fennim Reference table for Fennim. Open

Ferengi Reference table for Ferengi. Open

Fez Reference table for Fez. Open

Five Needle Telegraph Code Reference table for Five Needle Telegraph Code. Open

Flags Reference table for Flags. Open

Fonic Reference table for Fonic. Open

Forerunner Reference table for Forerunner. Open

Four Square Reference table for Four Square. Open

Freemason Version 1 Reference table for Freemason Version 1. Open

Freemason Version 2 Reference table for Freemason Version 2. Open

Freeze Marks Reference table for Freeze Marks. Open

Fringe Reference table for Fringe. Open

Futhark Reference table for Futhark. Open

Futurama Reference table for Futurama. Open

Futurama 2 Reference table for Futurama 2. Open

Gaim Reference table for Gaim. Open

Galactic Reference table for Galactic. Open

Gardner Reference table for Gardner. Open

Geocache Attributes Reference table for Geocache Attributes. Open

Gerudo - Zelda Reference table for Gerudo - Zelda. Open

Giovanni Fontana Reference table for Giovanni Fontana. Open

Glagolitic Reference table for Glagolitic. Open

Gnommish Reference table for Gnommish. Open

GoldBug Code Reference table for GoldBug Code. Open

Gravity Falls - Author Reference table for Gravity Falls - Author. Open

Gravity Falls - Bill Reference table for Gravity Falls - Bill. Open

Great Machine Reference table for Great Machine. Open

Hexacode Reference table for Hexacode. Open

Hexahue Reference table for Hexahue. Open

HVD Reference table for HVD. Open

Hylian Reference table for Hylian. Open

Hylian 64 Reference table for Hylian 64. Open

Hymmnos Reference table for Hymmnos. Open

IChing Hexagrams Reference table for IChing Hexagrams. Open

Iconian Reference table for Iconian. Open

Illuminati Version 1 Reference table for Illuminati Version 1. Open

Illuminati Version 2 Reference table for Illuminati Version 2. Open

Indiana Jones Reference table for Indiana Jones. Open

Japanese Numbers Reference table for Japanese Numbers. Open

Jenks Reference table for Jenks. Open

Kabouter Reference table for Kabouter. Open

Kabouter 1947 Version Reference table for Kabouter 1947 Version. Open

KarTrak Reference table for KarTrak. Open

Kenny Code Reference table for Kenny Code. Open

Kix Reference table for Kix. Open

Klingon Reference table for Klingon. Open

Klinzhai - Klingon Reference table for Klinzhai - Klingon. Open

Kokopelli Reference table for Kokopelli. Open

Korean Reference table for Korean. Open

Krakoan Reference table for Krakoan. Open

Kryptonian Reference table for Kryptonian. Open

Leprechaun Reference table for Leprechaun. Open

Letters to Numbers Reference table for Letters to Numbers. Open

Life Reference table for Life. Open

Llort Reference table for Llort. Open

Lord of the Rings Periodic Table Reference table for Lord of the Rings Periodic Table. Open

Lunar Reference table for Lunar. Open

Magicode Reference table for Magicode. Open

Malachim Reference table for Malachim. Open

Malcorian Reference table for Malcorian. Open

Mandalorian Reference table for Mandalorian. Open

Marain Reference table for Marain. Open

Marain 2 Reference table for Marain 2. Open

Markab Reference table for Markab. Open

Mary Queen of Scots Reference table for Mary Queen of Scots. Open

Master of Magic Reference table for Master of Magic. Open

Matoran Reference table for Matoran. Open

Maximal Reference table for Maximal. Open

Mayan Reference table for Mayan. Open

Mayan 2 Reference table for Mayan 2. Open

Maze Reference table for Maze. Open

Mesoppotanic Reference table for Mesoppotanic. Open

Minbari Reference table for Minbari. Open

Minimoys Reference table for Minimoys. Open

Mirror Numbers 1 Reference table for Mirror Numbers 1. Open

Mirror Numbers 2 Reference table for Mirror Numbers 2. Open

Moon Reference table for Moon. Open

Morse Mountain Reference table for Morse Mountain. Open

Morseircle Reference table for Morseircle. Open

Murray Version 1 Reference table for Murray Version 1. Open

Murray Version 2 Reference table for Murray Version 2. Open

Murray Version 3 Reference table for Murray Version 3. Open

Murray Version 4 Reference table for Murray Version 4. Open

Music Sheet Reference table for Music Sheet. Open

N'Ko Reference table for N'Ko. Open

Narn Reference table for Narn. Open

NATO Flags Reference table for NATO Flags. Open

NATO Phonetic Alphabet Reference table for NATO Phonetic Alphabet. Open

Nazcaan Reference table for Nazcaan. Open

Number Pad Lines Reference table for Number Pad Lines. Open

Nyctographic Reference table for Nyctographic. Open

Ogham Reference table for Ogham. Open

Ophidean Reference table for Ophidean. Open

Orkhon Reference table for Orkhon. Open

Outer Rim Reference table for Outer Rim. Open

Pakmara Reference table for Pakmara. Open

Pasley Reference table for Pasley. Open

Periodic Table Reference table for Periodic Table. Open

Pig Pen Version 1 Reference table for Pig Pen Version 1. Open

Pig Pen Version 2 Reference table for Pig Pen Version 2. Open

Pipeline Reference table for Pipeline. Open

Pixel Reference table for Pixel. Open

Planet Reference table for Planet. Open

Planet Barcode Reference table for Planet Barcode. Open

Pool Balls Reference table for Pool Balls. Open

Popham Reference table for Popham. Open

Postnet Barcode Reference table for Postnet Barcode. Open

Precursor Reference table for Precursor. Open

Predacon Reference table for Predacon. Open

Predator Reference table for Predator. Open

Preservers Reference table for Preservers. Open

Puzzle Reference table for Puzzle. Open

Quadoo Reference table for Quadoo. Open

R2 Units - Star Wars Reference table for R2 Units - Star Wars. Open

Reality Reference table for Reality. Open

Red Herring Reference table for Red Herring. Open

Resistor Color Code Reference table for Resistor Color Code. Open

Rich Reference table for Rich. Open

Riddler Reference table for Riddler. Open

Romulan Reference table for Romulan. Open

Rosicrucian Reference table for Rosicrucian. Open

Royal Mail (RM4SCC) Reference table for Royal Mail (RM4SCC). Open

San Luca Reference table for San Luca. Open

Segment Display Reference table for Segment Display. Open

Segment Display (7-Segment) Reference table for Segment Display (7-Segment). Open

Seltorian Reference table for Seltorian. Open

Semaphore Clocks Reference table for Semaphore Clocks. Open

Semaphore Flags Reference table for Semaphore Flags. Open

Semaphore Man Reference table for Semaphore Man. Open

Semaphore Trousers Reference table for Semaphore Trousers. Open

Shadow Reference table for Shadow. Open

Sheliak Reference table for Sheliak. Open

Sign Reference table for Sign. Open

Simlish (From The Sims) Reference table for Simlish (From The Sims). Open

Sith Reference table for Sith. Open

Slash and Pipe Reference table for Slash and Pipe. Open

Snooker Reference table for Snooker. Open

Solresol Reference table for Solresol. Open

Son'a Reference table for Son'a. Open

Space Invaders Reference table for Space Invaders. Open

Spintype Reference table for Spintype. Open

Sprykski Reference table for Sprykski. Open

Star Wars Periodic Table Reference table for Star Wars Periodic Table. Open

Sumerian Reference table for Sumerian. Open

Takcha Reference table for Takcha. Open

Tap (Knock) Code Reference table for Tap (Knock) Code. Open

Templar Reference table for Templar. Open

Tenctonese Reference table for Tenctonese. Open

Tengwar Reference table for Tengwar. Open

Terzi Reference table for Terzi. Open

Tetragrammaton Reference table for Tetragrammaton. Open

Theban Reference table for Theban. Open

Tholian Reference table for Tholian. Open

Three Square Reference table for Three Square. Open

Tic Tac Toe Reference table for Tic Tac Toe. Open

Time Reference table for Time. Open

Tkon Reference table for Tkon. Open

Tomtom Reference table for Tomtom. Open

Trees Reference table for Trees. Open

Triangle Reference table for Triangle. Open

Triangles Reference table for Triangles. Open

Ugaritic Reference table for Ugaritic. Open

Ulog Reference table for Ulog. Open

Umbaran - Star Wars Reference table for Umbaran - Star Wars. Open

Unitology Reference table for Unitology. Open

Unown - Pokemon Alphabet Reference table for Unown - Pokemon Alphabet. Open

US State Flags Reference table for US State Flags. Open

Utopian Reference table for Utopian. Open

Vanity Code Reference table for Vanity Code. Open

Video Game Reference table for Video Game. Open

Vidiian Reference table for Vidiian. Open

Visitor Reference table for Visitor. Open

Vorlon Reference table for Vorlon. Open

Vulcan - Modern Reference table for Vulcan - Modern. Open

Vulcan - Old Reference table for Vulcan - Old. Open

Wakanda Reference table for Wakanda. Open

Window Reference table for Window. Open

Wraith Reference table for Wraith. Open

Xelbet Reference table for Xelbet. Open

Yan Koryani Reference table for Yan Koryani. Open

Yin Yang Reference table for Yin Yang. Open

Zentlardy Reference table for Zentlardy. Open

Zodiac Reference table for Zodiac. Open