Weighting Factors and Their Users

binaey, octal, decimal, hexadecimal.

Octal to decimal converter

Octal to decimal number conversion calculator.

Enter a octal number and press the Convert button:

Enter octal number:		8
Decimal result:		10

Decimal to octal converter ►

How to convert from octal to decimal

A regular decimal number is the sum of the digits multiplied with 10ⁿ.

Example #1

137 in base 10 is equal to each digit multiplied with its corresponding 10ⁿ:

137₁₀ = 1×10²+3×10¹+7×10⁰ = 100+30+7

Octal numbers are read the same way, but each digit counts 8ⁿ instead of 10ⁿ.

Multiply each digit of the hex number with its corresponding 8ⁿ.

Example #2

37 in base 8 is equal to each digit multiplied with its corresponding 8ⁿ:

37₈ = 3×8¹+7×8⁰ = 24+7 = 31

Example #3

7014 in base 8 is equal to each digit multiplied with its corresponding power of 8:

7014₈ = 7×8³+0×8²+1×8¹+4×8⁰= 3584+0+8+4 = 3596

Octal to decimal conversion table

Octal base 8	Decimal base 10
0	0
1	1
2	2
3	3
4	4
5	5
6	6
7	7
10	8
11	9
12	10
13	11
14	12
15	13
16	14
17	15
20	16
30	24
40	32
50	40
60	48
70	56
100	64

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http://www.rapidtables.com/convert/number/octal-to-decimal.htm