Roman Numeral Symbols
| Symbol | Value | Symbol | Value |
|---|---|---|---|
| I | 1 | L | 50 |
| V | 5 | C | 100 |
| X | 10 | D | 500 |
| — | — | M | 1,000 |
Subtractive Notation
Roman numerals use a subtractive notation when a smaller symbol precedes a larger one. This avoids more than three identical symbols in a row:
- IV = 4 (not IIII)
- IX = 9 (not VIIII)
- XL = 40 · XC = 90 · CD = 400 · CM = 900
Subtractive PairsIV(4) IX(9) XL(40) XC(90) CD(400) CM(900)
Common Conversions
| Number | Roman | Number | Roman |
|---|---|---|---|
| 2025 | MMXXV | 1994 | MCMXCIV |
| 2024 | MMXXIV | 1000 | M |
| 2000 | MM | 500 | D |
| 1999 | MCMXCIX | 100 | C |
𝕀 Convert any number to Roman numerals or decode any Roman numeral
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