Decimal to Octal Converter

Your details

A non-negative whole number in base 10.
Octal (base 8)
377

The base-8 representation of your decimal input.

Decimal (base 10)255
Binary (base 2)11111111
Hexadecimal (base 16)FF
Octal digit count3
Octal digit count3

Decimal 255 = Octal 377

  • A 3-digit octal number covers the decimal range 64 to 511.
  • Each octal digit maps to exactly 3 binary digits, so (377)₈ is (11111111)₂ grouped as sets of three.

Next stepOctal is base 8, so valid digits are 0 through 7 only. Each octal digit corresponds directly to 3 binary digits, which made octal a practical shorthand in early 6-, 12-, 24-, and 36-bit computing systems.

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