# One's & Two's Complement Calculator

Input Type
Binary Value
1s Complement  =  0101
2s Complement  =  0110
CALCULATE

1's & 2's Complement Calculator is an online digital computation tool to find the one's & two's compliment of a given binary, hex or decimal number. 1's complement of a binary number is the number that can be obtained by changing all ones to zeros and all zeros to ones of a given binary number. Whereas, 2's complement is a binary number that can be obtained by adding 1 to one's complement of a given binary number.

How to calculate 1's complement for a binary number?
The 1's complement can be easily calculated by inverting the 0s & 1s of a given binary number.

How to calculate 1's complement for a decimal number?
1. Find the binary equivalent for the given decimal.
2. Invert the 0s & 1s of a equivalent binary number provides the 1s complement.

How to calculate 2's complement for a binary number?
1. Find the one's complement by inverting 0s & 1s of a given binary number.
2. Add 1 to the one's complement provides the two's complement.

How to calculate 2's complement for a decimal number?
1. Find the binary equivalent for the given decimal.
2. Find the one's complement by inverting 0s & 1s of a given binary number.
3. Add 1 to the one's complement provides the two's complement.

To calculate the 1's or 2's complement by using this calculator for binary input, select the Binary radio button, just type the binary number in the text box provided and click on the calculate button displays the equivalent 1s & 2s complement of a given number.

To calculate the One's & Two's complement by using this calculator for Decimal input, select the Decimal radio button, just type the decimal number in the text box provided and click on the calculate button displays the equivalent 1s or 2s complement of a given number. This calculator can support and find out the 1's & 2's Complement for both 8 bit, 16 bit and 32 bit binary numbers.