Binary number


A number in base 2. That is a number that can be represented using only two numeric symbols, a zero and one, (0 and 1).

Decimal number Binary equivalent
0 0
1 000001
2 000010
4 000100
12 001100
100 01100100
1995 11111001011


Binary numbers are used by computers because they can easily be represented and stored by device hardware that utilizes switches, magnetic fields, or charge polarities that are normally in one of two states. The on or off, north or south, or positive or negative states can easily represent the 1s and 0s of a binary number, respectively.

This form will convert binary to decimal and vice versa. The change in the decimal values is only read when the focus leaves the input field, so you may need to click on the page to convert decimal to binary values.