Octal to Hexadecimal Conversion
Convert between Octal and Hexadecimal quickly and accurately.
How to Convert Octal to Hexadecimal
Conversion Formula
Example
Convert 15 oct to hex:
Unit Information
Learn about the numbers units you're converting between
Octal
oct
Definition
Octal is a base-8 numeral system using digits 0, 1, 2, 3, 4, 5, 6, and 7. It was historically important in early computer systems and is still used in some programming contexts.
History/Origin
Octal was widely used in early computer systems, particularly in the 1960s and 1970s. It was popular because it maps easily to binary (3 bits per octal digit).
Current Use
Octal is used in some programming languages, file permissions (Unix/Linux), and certain computer science applications.
Multiplier
8
Offset
0
Hexadecimal
hex
Definition
Hexadecimal is a base-16 numeral system using digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F. It is widely used in computer science, programming, and digital systems.
History/Origin
Hexadecimal became important with the development of computers. It maps easily to binary (4 bits per hex digit) and is more compact than binary for representing large numbers.
Current Use
Hexadecimal is used extensively in computer programming, memory addresses, color codes (RGB), debugging, and digital systems.
Multiplier
16
Offset
0
Octal to Hexadecimal Conversion Table
| Octal [oct] | Hexadecimal [hex] |
|---|---|
| 1 oct | 0.5 hex |
| 10 oct | 5 hex |
| 25 oct | 12.5 hex |
| 50 oct | 25 hex |
| 100 oct | 50 hex |
| 0 oct | 0E+0 hex |
| -10 oct | -5 hex |
| -40 oct | -20 hex |
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Octal to Base 33
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Octal to Base 35
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