Convert a decimal number to Mayan vigesimal numerals and Roman numerals, with the place values shown.
Result
How to use this tool
Enter a whole number from 1 to 3999.
Read the Mayan levels from top (highest place) to bottom.
Read the Roman numeral equivalent.
Check the base-20 place values to verify the conversion.
Formula & worked example
2026 is MMXXVI in Roman numerals and, in Mayan base 20, levels 5, 1 and 6 — a bar, a dot, then a bar and a dot.
Limitations — read this before you rely on it
Readable dot-and-bar rendering, not a palaeographic reproduction; Roman output uses standard subtractive notation capped at 3999.
Frequently asked questions
They are base 20 and positional: each level is 20 times the one below, with dots for 1, bars for 5 and a shell for 0.
20 is one twenty and zero ones, so the upper level holds a dot and the lower level holds a shell.
Yes, the shell glyph is one of the earliest explicit zero symbols.
Standard Roman numerals without overlines stop at 3999; the Mayan side alone could go higher.
This tool uses dot and bar symbols as a readable stand-in for the carved glyphs, which varied by scribe and period.