Octal to Decimal converter


How to convert Octal to Decimal:

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

Example:

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; however each digit counts 8n instead of 10n.

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


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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