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Number Base Converter

Convert numbers between binary, octal, decimal and hexadecimal — or any base from 2 to 36.

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🔒PrivateRuns in your browser — nothing is uploaded.
⚡FastInstant results, no waiting in queues.
💸FreeNo sign-up, no watermark, no limits.
📱AnywhereWorks on phone, tablet and desktop.

How to use the Number Base Converter

  1. Type a number in any field
  2. All other bases update instantly
  3. Copy the value you need

About this tool

Convert numbers between binary, octal, decimal and hexadecimal — or any base from 2 to 36. Number Base Converter is part of ToolNest's collection of free developer tools. It works instantly in your browser with no account and no installation.

Frequently asked questions

Is the Number Base Converter free to use?

Yes. Number Base Converter on ToolNest is completely free, with no sign-up, no watermark and no daily limits.

Is my data private?

Yes. Number Base Converter runs entirely in your browser. Your text and data are not uploaded or stored on our servers.

Does Number Base Converter work on mobile phones?

Yes. ToolNest works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux. There is nothing to install.