## Binary Number System

Start here to understand the binary number base, and how it compares to decimal numbers.

Our website was created in 2006 to help students and teachers quickly learn and understand binary numbers, and to explain binary arithmetic with clear examples. We also have free practice exercises, and online binary-to-decimal and decimal-to-binary converters.

Get started below!

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Start here to understand the binary number base, and how it compares to decimal numbers.

See how simple it is to add binary numbers.

Subtracting binary numbers is fairly straightfoward.

It's easiser to divide binary numbers than to divide decimal numbers.

Learn how to divide in the binary number system.

Here's how to convert from binary to decimal. Try our free online conversion tool.

Use our online decimal to binary converter, and understand how decimal-to-binary conversion works.

Try these free practice exercises and test your knowledge. Perfect for students and teachers.

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Home - Number Systems - Add - Subtract - Multiply - Divide - Convert Binary - Convert Decimal - Practice