octalhex
Octal to Hexadecimal Converter
Convert octal numbers to hexadecimal instantly, with the working shown.
To convert octal to hexadecimal, enter your value above and the result appears as you type. 377 in octal is FF in hexadecimal. Conversion uses arbitrary-precision integers, so very large values do not lose their low digits the way floating-point arithmetic would.
Runs in your browserAbout converting OCTAL to HEX
Octal is base 8 and groups bits in threes. It survives mainly in Unix file permissions, where 755 means three sets of read/write/execute bits. Hex is base 16 and maps exactly four bits per digit, which is why one byte is always two hex digits and why colours, memory addresses and hashes are written this way. As a worked example, 377 equals 255 in decimal and therefore FF in hexadecimal.
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