| Decimal | 12 |
| Binary | 1100 |
| Hexadecimal | 0xc |
| Roman | XII |
| Square root of | 144 |
| Factors | 3 2 2 |
| English | twelve |
| Wikipedia article about 12 | Article about 12 |
| ASCII code for | Form Feed |
| random from 0 to 6 | Show |
| random from 0 to 10 | Show |
| random from 0 to 100 | Show |
| random from 0 to 1000 | Show |