| HTML Entity (dec) | fi |
| HTML Entity (hex) | fi |
| UTF-8 (hex) | 0xefac81 / 0xef 0xac 0x81 (3 bytes) |
| UTF-8 (dec) | 239, 172, 129 (3 bytes) |
| UTF-16-BE (hex) | 0xfb01 / 0xfb 0x01 (2 bytes) |
| UTF-16-BE (dec) | 251, 1 (2 bytes) |
| UTF-32-BE (hex) | 0xfb01 / 0x00 0x00 0xfb 0x01 (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 251, 1 (4 bytes) |
| C/C++/Java source code | "\ufb01" |
| Python source code | "\ufb01" |