Octal to Binary Converter

Convert Octal integers to Binary with exact arbitrary-precision arithmetic. Signed values, long integers, common source prefixes, spaces, and underscore separators are accepted, and the result updates as the input changes.

How to convert Octal to Binary

Replace every octal digit with its three-bit binary value, then remove unnecessary leading zeros from the complete result.

Octal to Binary example

745 in base 8 equals 111100101 in base 2. The converter supports values much larger than JavaScript's ordinary safe integer range because it uses integer arithmetic rather than floating-point numbers.

Common conversions: Binary Converter · Hex Converter · Binary to Decimal · Decimal to Binary · Binary to Hex · Hex to Binary · Decimal to Hex · Hex to Decimal · Binary to Octal · Octal to Binary