Skip to main content

Maya Numbers

Convert between decimal numbers and Maya vigesimal dot-and-bar numerals.

The Maya counted in base 20 (vigesimal). Each position stacks up to four dots (worth 1 each) over up to three bars (worth 5 each), and a shell shape stands for zero. Numerals are written vertically, with the highest place value on top. Enter a number to see its glyphs, or type the positional digits to read one back.