Roman Numerals
FREEConvert numbers to Roman numerals and vice versa. Supports 1 to 3999.
Quick Examples
ℹ️ About Roman Numerals
Roman numerals turn up everywhere once you start looking — clock faces, Super Bowl numbers, book chapters, movie copyright years and monarch names. They use just seven letters (I, V, X, L, C, D, M) combined by a handful of rules, and this converter handles both directions: type a number to get its Roman form, or paste a Roman numeral to get the Arabic value. It covers 1 to 3,999, the standard range classical Roman numerals express.
📖 How to Use Roman Numerals
1
Enter a number or numeral
Type an Arabic number (like 2026) or a Roman numeral (like MMXXVI).
2
Convert instantly
The result appears as you type — no button needed.
3
Check the breakdown
See how the value splits into thousands, hundreds, tens and units.
4
Copy the result
Copy the converted value for a tattoo, document, or design.
💡 Examples
Year
INPUT
2026→
OUTPUT
MMXXVIChapter number
INPUT
XIV→
OUTPUT
14Uses subtractive notation (XL = 40, IX = 9)
INPUT
49→
OUTPUT
XLIX📊 Roman Numerals Chart
The building blocks and common values. Combine these to read or write any number from 1 to 3,999.
| Number | Roman | Number | Roman |
|---|---|---|---|
| 1 | I | 20 | XX |
| 2 | II | 30 | XXX |
| 3 | III | 40 | XL |
| 4 | IV | 50 | L |
| 5 | V | 60 | LX |
| 6 | VI | 70 | LXX |
| 7 | VII | 80 | LXXX |
| 8 | VIII | 90 | XC |
| 9 | IX | 100 | C |
| 10 | X | 500 | D |
| 11 | XI | 1000 | M |
| 14 | XIV | 2000 | MM |
| 19 | XIX | 2026 | MMXXVI |
Subtractive pairs: IV (4), IX (9), XL (40), XC (90), CD (400), CM (900).
🚀 Pro Tips
✓Letters are added left to right when larger or equal (VI = 6), and subtracted when a smaller letter precedes a larger one (IV = 4).
✓Only I, X, C and M can be repeated, and at most three times in a row — so 4 is IV, not IIII.
✓Subtractive pairs are limited: IV, IX, XL, XC, CD and CM. You will never see IL or IC.
✓There is no zero and no negative in classical Roman numerals — the system starts at I (1).
✓For years, read in chunks: MM = 2000, XX = 20, VI = 6, so MMXXVI = 2026.