Roman Numerals to Number
Convert Roman numerals to numbers easily. Free Roman numeral to number converter.
Decimal Number
42
Basic Roman Numerals
| Roman Numeral | Decimal Value |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1000 |
Subtractive Combinations
When a smaller numeral appears before a larger one, it is subtracted:
| Roman Numeral | Decimal Value |
|---|---|
| IV | 4 |
| IX | 9 |
| XL | 40 |
| XC | 90 |
| CD | 400 |
| CM | 900 |