900 = CM
900 is written with just CM.
CM uses subtraction: CM = 900. 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 |
|---|---|
| 700 | DCC |
| 750 | DCCL |
| 800 | DCCC |
| 850 | DCCCL |
| 950 | CML |
| 1000 | M |
| 1100 | MC |
| 1200 | MCC |