How to convert float number to Binary?

Question

Can anyone please tell me how can I convert this float number: 12.25 to binary? I know how to convert the \"12\" but not the 0.25

Any help is much appreciated. Thank

Answer 1

Keep multiplying the number after decimal by 2 till it becomes 1.0:

0.25*2 = 0.50
0.50*2 = 1.00

and the result is in reverse order being .01