a toolbox for the web.
Hosting sponsor.

Octal to Decimal Converter Tool

To use this free octal to decimal converter tool, simply enter your octal number into the box below.

Converted Decimal Value

What is This Tool?

It is just a simple way for you to convert the octal number system to the decimal number system for free online.

Binary?

Binary, by the very definition of the word, is the most simple number system consisting of ones and zeros. This system can be used to solve computational problems since the two sole values work as states: "on" or "off". As a result, octal is the perfect conduit for digital transistor based technology.

Octal?

This tool is an octal to decimal converter. The octal numerical system, often referred to as simply "oct" from the Latin word octo (eight) is the base-8 number system, which uses digits from 0 to 7. In computer programming, the octal equivalent of a binary number is sometimes used to represent it because it is shorter.

Octal to Decimal Conversion Table

Decimal Base-10
BinaryBase-2
OctalBase-8
HexadecimalBase-16
0
0
0
0
1
1
1
1
2
10
2
2
3
11
3
3
4
100
4
4
5
101
5
5
6
110
6
6
7
111
7
7
8
1000
10
8
9
1001
11
9
10
1010
12
A
11
1011
13
B
12
1100
14
C
13
1101
15
D
14
1110
16
E
15
1111
17
F
16
10000
20
10
17
10001
21
11
18
10010
22
12
19
10011
23
13
20
10100
24
14
21
10101
25
15
22
10110
26
16
23
10111
27
17
24
11000
30
18
25
11001
31
19
26
11010
32
1A
27
11011
33
1B
28
11100
34
1C
29
11101
35
1D
30
11110
36
1E
31
11111
37
1F
32
100000
40
20