Base 2 to base 8

Convert Binary to Octal

Convert base 2 values to base 8. Integers remain exact even when they exceed JavaScript's ordinary safe-number limit.

Number From base

Result

52

To base

101010₂ = 52₈

Same value in common bases

Base	Value

Method

How to convert base 2 to base 8

Each binary digit is evaluated by its power of 2. The exact value is then repeatedly divided by 8 to produce the destination digits.

value₁₀ = sum(digit x 2^position)

For fractional digits, the converter keeps an exact rational numerator and denominator, then generates up to 32 destination digits. An ellipsis marks a repeating or longer expansion.

Examples

Binary to Octal table

Binary (base 2)	Octal (base 8)
1	1
10	2
1010	12
101010	52
1100100	144
11111111	377
10000000000	2000

Continue converting

Octal to BinaryReverse conversion Binary to decimalBase 2 to base 10 Decimal to hexadecimalBase 10 to base 16