Converting

binary numbers to

Octal numbers in 1-2-3:

1)

Write down your binary number:

100100101011

2)

Divide your binary number into groups of 3

bits
(if you have an amount of bits that is not evenly divisable by 3 you add 0 bits onto the left side.)

100 100 101 011

3

convert each group into a octal digit using this formula:

f(a,b,c) = a*2^2 + b*2^1 +c

1: 1*2^2 + 0*2^1 +0 = 4

2: 1*2^2 + 0*2^1 +0 = 4

3: 1*2^2 + 0*2^1 +1 = 5

4: 0*2^2 + 1*2^1 +1 = 3

100100101011(2) = 4453(8)

If you want to convert decimal numbers to octal numbers, you problaby want to convert from

decimal to binary first