| Decimal | 90 |
| Binary | 1011010 |
| Hexadecimal | 0x5a |
| Roman | XC |
| Square root of | 8100 |
| Factors | 5 3 3 2 |
| English | ninety |
| Wikipedia article about 90 | Article about 90 |
| ASCII code for | Uppercase Z |
| random from 0 to 6 | Show |
| random from 0 to 10 | Show |
| random from 0 to 100 | Show |
| random from 0 to 1000 | Show |