Two's (2's) Complement Calculator

Select the type of value and bit representation. Enter the decimal or binary value and hit the Calculate button to get the two’s complement using 2s complement calculator.

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Two's complement calculator is an online tool that finds the two’s (2's) complement of the given decimal or binary number. It can convert the number using 4, 8, 12, and 16 bit representation.

Two's (2's) complement converter also converts the given binary number into decimal and decimal to binary.

What is two’s complement?

Two's complement is a technique of storing integers so that common math problems become very simple to implement. It is a mathematical operation on binary numbers and used in computing.

How to find two’s complement?

To calculate 2’s complement without using a calculator, follow the example given below.


Find the 2s complement of (50)10.


Step 1: Convert the given decimal number to binary.

(50)10 = (00110010)2

Step 2: Take one’s complement of the binary number by converting each 0 to 1 and 1 to 0.

(00110010)2 = 11001101

Step 3: Add 1 to the one’s complement.

Two's complement

Two’s complement of (50)10 = 11001110