Type a number or a Roman numeral — get the other instantly, with a year chart below.
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Roman numeral symbols
Rules
- Add symbols from largest to smallest: VI = 6, XV = 15.
- A smaller symbol before a larger one is subtracted: IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900.
- A symbol repeats at most three times: III = 3, but 4 is IV (not IIII).
- V, L and D are never repeated or subtracted.
Years in Roman numerals
| Year | Roman | Year | Roman |
|---|
| 1947 | MCMXLVII | 2020 | MMXX |
| 1990 | MCMXC | 2024 | MMXXIV |
| 2000 | MM | 2025 | MMXXV |
| 2010 | MMX | 2026 | MMXXVI |
| 2015 | MMXV | 2027 | MMXXVII |
1 to 20
I, II, III, IV, V, VI, VII, VIII, IX, X, XI, XII, XIII, XIV, XV, XVI, XVII, XVIII, XIX, XX.
Frequently asked questions
What is 2026 in Roman numerals?
MMXXVI.
What is XLIX?
49 (XL = 40, IX = 9).
Why is 4 written IV and not IIII?
Standard Roman numerals use subtraction: a smaller symbol before a larger one is subtracted. IIII appears only on some clock faces.