| HTML Entity (dec) | ὑ |
| HTML Entity (hex) | ὑ |
| UTF-8 (hex) | 0xe1bd91 / 0xe1 0xbd 0x91 (3 bytes) |
| UTF-8 (dec) | 225, 189, 145 (3 bytes) |
| UTF-16-BE (hex) | 0x1f51 / 0x1f 0x51 (2 bytes) |
| UTF-16-BE (dec) | 31, 81 (2 bytes) |
| UTF-32-BE (hex) | 0x1f51 / 0x00 0x00 0x1f 0x51 (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 31, 81 (4 bytes) |
| C/C++/Java source code | "\u1f51" |
| Python source code | "\u1f51" |