Quick answer: 2026 is MMXXVI: M + M (2000) + X + X (20) + V + I (6).
How it's calculated
Seven symbols are used: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000. Symbols are written from largest to smallest and added together.
When a smaller symbol comes before a larger one it is subtracted, in six fixed pairs only: IV (4), IX (9), XL (40), XC (90), CD (400) and CM (900). No symbol repeats more than three times in a row, so 4 is IV, not IIII. If you type a non-standard form such as IIII, the converter reads it by the same add/subtract rule and shows the standard spelling.
The standard system stops at 3999 (MMMCMXCIX); larger numbers used bars over letters, which are not part of everyday use.
Worked examples
- 2026: M (1000) + M (1000) + X (10) + X (10) + V (5) + I (1) = MMXXVI
- 1999: M (1000) + CM (900) + XC (90) + IX (9) = MCMXCIX
- XLII: XL (40) + II (2) = 42
Roman numeral symbols
| Symbol | Value |
|---|---|
| I | 1 |
| IV | 4 |
| V | 5 |
| IX | 9 |
| X | 10 |
| XL | 40 |
| L | 50 |
| XC | 90 |
| C | 100 |
| CD | 400 |
| D | 500 |
| CM | 900 |
| M | 1000 |
Common numbers and years
| Number | Roman |
|---|---|
| 1 | I |
| 5 | V |
| 10 | X |
| 12 | XII |
| 50 | L |
| 99 | XCIX |
| 100 | C |
| 500 | D |
| 1000 | M |
| 1999 | MCMXCIX |
| 2000 | MM |
| 2025 | MMXXV |
| 2026 | MMXXVI |
| 3999 | MMMCMXCIX |
Frequently asked questions
What is 4 in Roman numerals?
IV. The form IIII appears on some clock faces but is not standard.
Is there a zero in Roman numerals?
No. The Roman system has no symbol for zero.
What is the largest standard Roman numeral?
3999, written MMMCMXCIX.
How do I write 2026 in Roman numerals?
MMXXVI. Two thousand is MM, twenty is XX and six is VI.
What is 1990 in Roman numerals?
MCMXC, which reads as 1000, then 900, then 90.
Why do some clocks show IIII instead of IV?
Mostly tradition. Clockmakers also like how IIII balances the VIII on the other side of the dial. In writing, IV is the correct form.