Base symbols and common conversions for reading and writing Roman numerals. For the reasoning behind the system, see Roman Numerals Explained.
| Symbol | Value |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1,000 |
| Number | Roman Numeral |
|---|---|
| 4 | IV |
| 9 | IX |
| 40 | XL |
| 90 | XC |
| 400 | CD |
| 900 | CM |
| 1,994 | MCMXCIV |
| 2,024 | MMXXIV |
The Roman Numeral Converter converts between Roman numerals and regular numbers instantly.
Roman Numeral Converter
Subtractive notation: placing a smaller-value symbol before a larger one means subtract. IV (5 minus 1) is the standard modern form, though IIII still shows up on some clock faces by tradition.
Traditionally 3,999 (MMMCMXCIX). Standard notation doesn’t repeat a symbol more than three times in a row and has no symbol for 5,000 or more without a special overline convention.
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