Roman Numerals Converter
Convert numbers to Roman numerals and back, instantly as you type — free, no signup.
Type a number or a Roman numeral to convert.
Copied!
Reference Table
| I | V | X | L | C | D | M |
|---|---|---|---|---|---|---|
| 1 | 5 | 10 | 50 | 100 | 500 | 1000 |
| IV | IX | XL | XC | CD | CM | Year 2026 |
| 4 | 9 | 40 | 90 | 400 | 900 | MMXXVI |
How to use
- Type a number between 1 and 3999 to see its Roman numeral instantly.
- Or type a Roman numeral like XIV to see its number value.
- Invalid entries show a friendly error so you can fix them.
- Use the reference table to learn the basic symbols.