| HTML Entity (dec) | Ё |
| HTML Entity (hex) | Ё |
| UTF-8 (hex) | 0xd081 / 0xd0 0x81 (2 bytes) |
| UTF-8 (dec) | 208, 129 (2 bytes) |
| UTF-16-BE (hex) | 0x401 / 0x04 0x01 (2 bytes) |
| UTF-16-BE (dec) | 4, 1 (2 bytes) |
| UTF-32-BE (hex) | 0x401 / 0x00 0x00 0x04 0x01 (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 4, 1 (4 bytes) |
| C/C++/Java source code | "\u0401" |
| Python source code | "\u0401" |