Number system converter
Type any number and see how seven civilisations would have written it, from tally marks and hieroglyphs to binary.
Any whole number from 0 to 99,999.
Tally marks
Most symbols2026 symbolsThat would take 2026 marks in a row. Too many to draw, which is what we're trying to show.
One mark per thing, crossed through in groups of five. The oldest counting there is.
Ancient Egyptian
10 symbolsA different picture for 1, 10, 100, 1,000 and up. Repeat each one as often as you need.
Babylonian
16 symbolsWedges pressed into clay, counted in sixties. This is why an hour has 60 minutes.
Maya
Fewest symbols4 symbolsA dot is 1, a bar is 5, and a shell is zero. Places are worth twenty times the one below.
Roman
6 symbolsLetters added up, with a smaller letter before a bigger one meaning subtract.
Binary
11 symbolsOnly two digits, 0 and 1. Every place is worth double the one before. The code inside every computer.
Our digits today
Fewest symbols4 symbolsTen digits, including a zero, and the place of a digit tells you its value.
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