Binary to Octal Converter
Convert binary (base 2) numbers to octal (base 8).
Octal
Binary to octal conversion explained
Binary (base 2) uses only the digits 0 and 1. Octal (base 8) uses digits 0–7. The easiest manual shortcut is to group binary digits into threes from the right and map each triplet to an octal digit — 111 111 becomes 77, and 001 000 000 becomes 100. This tool handles arbitrarily large integers entirely in your browser using BigInt arithmetic. To go the other way, try the Octal to Binary Converter, or use the all-in-one Base Converter for any radix from 2 to 36.
Private & free — this tool runs entirely in your browser.
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