Roman Numeral Converter
Type a number to get Roman numerals, or type Roman numerals to get the number.
Quick answer: Type a number from 1 to 3999 for Roman numerals, or Roman numerals for the number. For example, 2026 is MMXXVI, 1994 is MCMXCIV and 49 is XLIX.
How to use it
- Type a number between 1 and 3999, such as 2026, to get Roman numerals.
- Or type Roman numerals, such as MCMXCIV, to get the number.
- Press Copy.
The seven letters
I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000. Letters are added together, except that a smaller letter placed before a larger one is subtracted: IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900.
Common Roman numerals
| Number | Roman numeral |
|---|---|
| 1 | I |
| 2 | II |
| 3 | III |
| 4 | IV |
| 5 | V |
| 6 | VI |
| 7 | VII |
| 8 | VIII |
| 9 | IX |
| 10 | X |
| 20 | XX |
| 30 | XXX |
| 40 | XL |
| 50 | L |
| 60 | LX |
| 70 | LXX |
| 80 | LXXX |
| 90 | XC |
| 100 | C |
| 200 | CC |
| 300 | CCC |
| 400 | CD |
| 500 | D |
| 600 | DC |
| 700 | DCC |
| 800 | DCCC |
| 900 | CM |
| 1000 | M |
| 2000 | MM |
| 3000 | MMM |
Standard Roman numerals stop at 3999 (MMMCMXCIX). Larger numbers used a bar over a letter to multiply by 1000, which this tool does not write.
What people use it for
- Homework and school projects
- Quick checks without a calculator
- Puzzles and games
- Learning how codes work
Questions
How do you write 4 in Roman numerals?
4 is IV. Clock faces often show IIII, but the standard form is IV.
What is 2026 in Roman numerals?
2026 is MMXXVI.
Is there a zero in Roman numerals?
No. The Romans had no symbol for zero.
What is the biggest Roman numeral?
In the standard form, MMMCMXCIX is 3999.
Is it free?
Yes. No sign-up, no install and no limit.
Is anything saved or sent?
No. Everything runs in your browser. Only your own best score, where a page shows one, is kept on your device.
Last updated 2026-10-24. Free to use, no sign-up. Made by ficklestudio26.