15 in Binary

Decimal 15 equals 1111 in binary.

Decimal → Binary

15=1111

Open 15 in the interactive decimal to binary converter →

15 in all number bases

Decimal15

Hexadecimal0xF

Binary1111

Octal17

How 15 converts from decimal to binary

Divide by 2 repeatedly and keep each remainder, then read the remainders from bottom to top:

15÷ 2 =7remainder1

7÷ 2 =3remainder1

3÷ 2 =1remainder1

1÷ 2 =0remainder1

Result (remainders bottom to top): 1111