Base 10 to base 8

Convert Decimal to Octal

Convert base 10 values to base 8. Integers remain exact even when they exceed JavaScript's ordinary safe-number limit.

Number From base

Result

52

To base

42₁₀ = 52₈

Same value in common bases

Base	Value

Method

How to convert base 10 to base 8

Each decimal digit is evaluated by its power of 10. The exact value is then repeatedly divided by 8 to produce the destination digits.

value₁₀ = sum(digit x 10^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

Decimal to Octal table

Decimal (base 10)	Octal (base 8)
1	1
2	2
10	12
42	52
100	144
255	377
1024	2000

Continue converting

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