Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal.
About the Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal. Free online number base conversion tool.
Private by design
Everything you type here is processed inside your browser. Nothing is sent to a server, logged or stored, so it is safe to use with real numbers, drafts and anything you would not paste into a hosted tool.
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Questions people ask
How do I convert binary to decimal?
Enter the binary number in the binary input field and the tool instantly shows the equivalent decimal, octal, and hexadecimal values.
What number bases are supported?
This tool supports binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) conversions.
Can I convert large numbers?
Yes. The converter handles numbers within JavaScript's safe integer range, which is sufficient for most use cases.