9 = IX
9 is written with just IX.
IX uses subtraction: IX = 9. A smaller symbol before a larger one is subtracted.
| Symbol | I | V | X | L | C | D | M |
|---|---|---|---|---|---|---|---|
| Value | 1 | 5 | 10 | 50 | 100 | 500 | 1,000 |
Need another number? Use the Roman numeral converter (both directions).
| Number | Roman numeral |
|---|---|
| 5 | V |
| 6 | VI |
| 7 | VII |
| 8 | VIII |
| 10 | X |
| 11 | XI |
| 12 | XII |
| 13 | XIII |