Octal to Septenary Converter

Convert Octal (Base 8) to Septenary (Base 7) with step-by-step solution.

Valid digits: 01234567
255 (Base 8) = 335 (Base 7)
Step-by-Step Solution
1Convert Octal to Decimal:

Each digit × 8^position:

DigitValuePositionCalculationResult
2222 × 8^2128
5515 × 8^140
5505 × 8^05
Sum: 128 + 40 + 5 = 173
2Convert Decimal to Septenary:

Divide by 7, collect remainders:

StepDividend÷ 7QuotientRemainderDigit
1173÷ 72455
224÷ 7333
33÷ 7033
Read bottom to top: 335
3Result:
255 (Base 8) = 335 (Base 7)

Conversion Table

DecimalOctalSeptenary
000
111
222
333
444
555
666
7710
81011
91112
101213
151721
162022
202426
324044

255 (Base 8) in All Bases

Number SystemBaseValue
Binary210101101
Decimal10173
Hexadecimal16AD
Ternary320102
Quaternary42231
Quinary51143
Senary6445
Septenary7335
Duodecimal12125
Vigesimal208D
Duotrigesimal325D
Hexatrigesimal364T

Popular Conversions

How to Convert Octal to Septenary

To convert from Octal (base 8) to Septenary (base 7), first convert to decimal, then convert from decimal to Septenary.

About Octal

Used in Unix file permissions. Uses digits: 01234567

About Septenary

Days of the week. Uses digits: 0123456