Octal to hex converter
Enter an octal number to get its hex value along with the bits that link the two bases.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter octal number.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
Turn each octal digit into 3 bits, then regroup the bits into groups of 4 from the point and turn each group into one hex digit.
Example
Inputs: Octal number = 777. Result: Result in hexadecimal: 1FF.
777
1FF
Limits and caveats
- Negative numbers keep a minus sign in front of the magnitude; they are not shown in two's complement.
- Up to 2000 digits before the point and 200 after it.
Questions about this tool
Why does the conversion go through binary?
Each octal digit is 3 bits and each hex digit is 4 bits, so binary links them directly with no division.
What is 777 in hex?
777 = 111 111 111 in binary = 1 1111 1111 = 1FF, which is 511 in decimal.
Can the result contain letters?
Yes. Values 10 to 15 are written A to F in hexadecimal.