How to Convert Octal Number to Decimal Number?

Octal to Decimal Conversion - Formula, Example

The first eight digits of decimal numbers from 0 to 7 used for Octal number system. Therefore the base of octal number system is represented by 8.


Formula:

(a)8 = ∑(ai x 8i)
Where, i = number of digits

Example :

What is the decimal number for 5248

Given :

Octal Value = 5248

To Find :

Decimal Value

Solution :

Octal Value = 5248
= 5 x 82 + 2 x 81 + 4 x 80
= 5 x 64 + 2 x 8 + 4 x 1
= 320 + 16 + 4
= 340

Result :

Decimal Value is 340.

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