13 in Binary

Decimal 13 equals 1101 in binary.

Decimal → Binary

13=1101

Open 13 in the interactive decimal to binary converter →

13 in all number bases

Decimal13

Hexadecimal0xD

Binary1101

Octal15

How 13 converts from decimal to binary

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

13÷ 2 =6remainder1

6÷ 2 =3remainder0

3÷ 2 =1remainder1

1÷ 2 =0remainder1

Result (remainders bottom to top): 1101