Roman Numeral Converter
Convert numbers and years to Roman numerals (2026 = MMXXVI) or Roman numerals back to numbers. Checks for invalid numerals. Free.
Runs in your browser. Your files and text never leave your device.
Type in either box; the other one updates.
Years:
| I | V | X | L | C | D | M |
| 1 | 5 | 10 | 50 | 100 | 500 | 1000 |
Convert numbers and Roman numerals
Turn a year, chapter number or tattoo date into Roman numerals, or read a Roman numeral from a clock, film credits or a book. A smaller letter before a bigger one is subtracted (IV = 4, XC = 90), otherwise letters are added up (VI = 6).