Roman numeral converter
Type a number or Roman numerals. It works out which way to convert.
The symbols
| I | 1 |
|---|---|
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1,000 |
Questions people ask
How do Roman numerals work?
Seven letters stand for values: I 1, V 5, X 10, L 50, C 100, D 500, M 1,000. Add them from largest to smallest, except that a smaller letter before a larger one is subtracted: IV is 4, IX is 9, XL is 40, CM is 900.
Why does it stop at 3,999?
Standard Roman numerals repeat a letter at most three times, so MMMCMXCIX (3,999) is the largest. Larger numbers used a bar over a letter to multiply it by 1,000.