Octal to Decimal Converter - Base 8 to Base 10

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'Convert From' and 'Convert To' are same! Please Select a different Source/Target number base.

Enter the octal (0-7) number and press Enter.

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Octal Converters : Octal to Binary , Octal to Hexadecimal

Complete List of Octal Converters

Conversion Units

Definition : Octal Number System (Base 8)

Octal number system(Oct) has a base of eight and uses combinations of numerals 0 to 7 to represent any number. 12₈ is an example of Octal number equal to decimal 10.

Definition : Decimal Number System (Base 10)

Decimal number is the most commonly used number system. It is a base 10 number system, uses combinations of numerals 0 to 9 to represent any number. It is widely used in everyday life for representing and manipulating numbers in many cultures and scientific applications.

Octal to Decimal Conversion Examples

octal (base 8) Number	Equivalent decimal (base 10) Number
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
50	40
100	64
500	320
1000	512