Octal 21 to Binary Conversion

What is 21 octal in binary? - converter, chart & solved example problem with step by step workout for how to carry out octal 21 to binary conversion manually. The base-8 value of 21₈ is equal to base-2 value of 10001₂
In different representation
21₈ = 10001₂
0o21 = 0b10001

Octal	Binary	Decimal
17.4	1111.1	15.5
20	10000	16
20.4	10000.1	16.5
21	10001	17
21.4	10001.1	17.5
22	10010	18

The below is the example problem with step by step work to find what is 21 octal in binary.
21 Octal to Binary Conversion:
step 1 Write each digit of given octal number 21₈ into its equivalent binary containing 3 digits each.
2 = 0101 = 001

step 2 Arrange the binary numbers group in the same order
21₈ = 10001₂