🔢 Number Systems

Convert octal to binary

To convert octal to binary, type the number below and the result appears instantly. Example: 55 in octal equals 101101 in binary.

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How to convert

Convert the number to decimal first, then from decimal to binary. Example: 55 in octal = 101101 in binary.

Conversion table

Octal to binary conversion table for common values
OctalBinary
11
210
311
4100
5101
6110
7111
101000
111001
121010
171111
2010000
40100000
1001000000
1441100100
37711111111
400100000000
17501111101000

About the units

Frequently asked questions

How do I convert octal to binary?

Convert the number to decimal first, then from decimal to binary. Example: 55 in octal = 101101 in binary.

Which digits are allowed in octal?

Base 8: the allowed digits are 0 1 2 3 4 5 6 7.

Are my numbers sent to a server?

No. The conversion runs entirely in your browser and nothing is sent to a server.

Related conversions

Reverse: binary to octal

Octal to other systems

Other systems to binary

All Number Systems conversions · The full tool in Zayenha Tools

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