| HTML Entity (dec) | ! |
| HTML Entity (hex) | ! |
| UTF-8 (hex) | 0x21 |
| UTF-8 (dec) | 33 |
| UTF-16-BE (hex) | 0x21 |
| UTF-16-BE (dec) | 0, 33 (2 bytes) |
| UTF-32-BE (hex) | 0x21 |
| UTF-32-BE (dec) | 0, 0, 0, 33 (4 bytes) |
| C/C++/Java source code | "\u0021" |
| Python source code | "\u0021" |