octalbinary
Octal to Binary Converter
Convert octal numbers to binary instantly, with the working shown.
To convert octal to binary, enter your value above and the result appears as you type. 377 in octal is 11111111 in binary. 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 BINARY
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. Binary is base 2 — each digit is one bit, so eight digits make a byte. As a worked example, 377 equals 255 in decimal and therefore 11111111 in binary.
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