Roman Numerals Converter
Roman numerals still show up on clocks, book chapters, movie copyright dates, Super Bowls and monarchs. Convert from Arabic to Roman and back, anywhere from 1 to 3999.
Your numbers
Result
| Symbol | Value |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1000 |
How Roman numerals work
Seven symbols: I=1, V=5, X=10, L=50, C=100, D=500, M=1000. You add them left to right; when a smaller symbol comes before a larger one, you subtract (IV=4, IX=9, XL=40). So 2024 = MMXXIV.
Limits and rules
The classic system runs from 1 to 3999 — there is no symbol for zero or for negative numbers. A symbol repeats at most three times in a row, which is why 4 is written IV rather than IIII. Numbers above 3999 need special bar notation and are rarely used.
Frequently asked questions
Sources
- Roman numeral system (history of mathematics)
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