Binary Calculator
Do arithmetic in pure binary — add, subtract, multiply and divide strings of 0s and 1s and get exact answers in both binary and decimal. Handles large binary numbers precisely, which standard calculators simply cannot.
How to use
- Enter both binary numbers (only 0 and 1).
- Select the operation.
- The answer shows in both binary and decimal.
Tips
- Only 0 and 1 are allowed — any other digit triggers an error.
- Negative results show with a minus sign, not in two's complement form.
- BigInt math keeps even very long binary numbers exact.
- For text conversion instead of arithmetic, use our Binary Text Converter tool.
Note: You get exact answers even for large binary numbers because BigInt arithmetic runs behind the scenes. A negative result is shown in binary with a minus sign (not two's complement).
Frequently Asked Questions (FAQ)
What does the Binary Calculator do?
It adds, subtracts, multiplies and divides binary numbers right in binary.
What do I need to enter?
The first binary number, the second binary number, and the operation to perform.
Do I get the answer in decimal too?
Yes. Results are shown in both binary and decimal.
Are answers exact for large binary numbers?
Yes. BigInt arithmetic runs behind the scenes, so answers are exact even for large binary numbers.
How are negative results shown?
A negative result is shown in binary with a minus sign, not in two's complement form.