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binaryClassic tool

Binary Calculator

Add, subtract, multiply and convert binary and decimal integers in your browser.

Use this binary calculator to work with base-2 numbers without converting every step by hand. It handles binary addition, subtraction, multiplication, binary-to-decimal conversion and decimal-to-binary conversion in one fast tool that fits study sessions, coding work, digital electronics and quick homework checks.

For the arithmetic modes, enter two binary values such as 1011, 111000 or inputs with the 0b prefix. For the conversion modes, only the first field is required. The tool accepts positive and negative integers, normalizes the output and shows the result in both binary and decimal.

That makes it useful for logic design, computer architecture classes, programming notes, embedded-system reviews and any moment when you want to confirm a base-2 result before using it in code, documentation or a larger calculation flow.

In arithmetic modes, fill both fields with whole binary values.

SummaryFill in the fields to calculate or convert the value.
Binary result—
Decimal result—
Normalized operation—

Use clear inputs to get a more useful result.