18 in Binary
Decimal 18 equals 10010 in binary.
18 in all number bases
Decimal18
Hexadecimal0x12
Binary0001 0010
Octal22
Try another value
Edit this value or switch its base. Your changes are calculated in your browser with exact integer arithmetic.
Input base:
Decimal
18Hex
0x12Binary
0b10010Octal
0o22How 18 converts from decimal to binary
Divide by 2 repeatedly and keep each remainder, then read the remainders from bottom to top:
18÷ 2 =9remainder0
9÷ 2 =4remainder1
4÷ 2 =2remainder0
2÷ 2 =1remainder0
1÷ 2 =0remainder1
Result (remainders bottom to top): 10010
This tool runs entirely in your browser - nothing you enter is uploaded or stored.