Roman Numeral Converter
Convert between Arabic and Roman numerals instantly. Supports 1–3999. Free, no sign-up.
🔒 100% client-side
Conversion Direction
Arabic Number (1–3999)
Result
Roman Numeral Reference
| Symbol | Value | Symbol | Value |
|---|---|---|---|
| M | 1000 | L | 50 |
| CM | 900 | XL | 40 |
| D | 500 | X | 10 |
| CD | 400 | IX | 9 |
| C | 100 | V | 5 |
| XC | 90 | IV | 4 |
| — | — | I | 1 |
Subtractive notation: IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900.
About Roman Numeral Converter
Roman Numeral Converter translates between Arabic numbers (1–3999) and Roman numerals instantly — entirely in your browser. Bidirectional: convert to Roman or from Roman back to Arabic. A step-by-step breakdown shows exactly how the result was calculated. Nothing is sent to any server.