The Hexadecimal and Octal Number Converters are an online tool for various applications of digital electronics to perform either hexadecimal, octal or octal, hex conversion. In numerical calculations, hexadecimal numbers have 16 digits ranging from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F. The basic 16 bits are used to represent hexadecimal numbers. The octal number is a number in the range from 0 to 7, indicating its basic 8 bits. Converting to octal (hexadecimal), and octal conversion to hexadecimal numbers, is an operation that is very much needed to understand in some applications such as electronics. To make the conversion, select an appropriate radio button and enter it. Because this calculator consists of two converters, hexadecimal to octal converter and octal number converted to hexadecimal.
Conversion table:
| Decimal | Binary | Octal | Hexadecimal |
| 0 | 0000 | 0 | 0 |
| 1 | 0001 | 1 | 1 |
| 2 | 0010 | 2 | 2 |
| 3 | 0011 | 3 | 3 |
| 4 | 0100 | 4 | 4 |
| 5 | 0101 | 5 | 5 |
| 6 | 0110 | 6 | 6 |
| 7 | 0111 | 7 | 7 |
| 8 | 1000 | 10 | 8 |
| 9 | 1001 | 11 | 9 |
| 10 | 1010 | 12 | A |
| 11 | 1011 | 13 | B |
| 12 | 1100 | 14 | C |
| 13 | 1101 | 15 | D |
| 14 | 1110 | 16 | E |
| 15 | 1111 | 17 | F |
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