Number Base Converter

Convert numbers between binary, octal, decimal and hexadecimal. Free, private and instant.

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How to use the Number Base Converter

Enter your values in the fields above.
The result updates automatically as you type.
Copy or note the figures you need.

About this tool

Enter a number in any base and see its binary, octal, decimal and hex values at once. Large values are supported using BigInt.

Number Base Converter is part of ToolStack Hub's Developer Tools. It runs entirely in your browser, which keeps your data private and makes results instant. There is nothing to install, no account to create and no usage limit.

Frequently asked questions

Is the Number Base Converter free?

Yes. Number Base Converter is completely free with no sign-up, limits or watermarks.

Is my data private when I use the Number Base Converter?

Yes. It runs in your browser, so your input is not uploaded to our servers.

Does it work on mobile?

Yes. ToolStack Hub tools work on phones, tablets and desktop browsers.

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