Convert numberbases.

Enter a number in any base and see it instantly in binary, octal, decimal and hexadecimal. Runs fully in your browser.

Open tool →How it works

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The Tool

Number base converter

Value

Input base

Binary

Octal

Decimal

Hexadecimal

Free Online Number Base Converter

Convert any number between binary, octal, decimal and hexadecimal in real time. Handy for programming, networking and digital electronics. Everything is computed instantly in your browser.

How to use

Enter a value.
Choose the input base.
Read the converted results in every base.

Everything runs locally in your browser — free, fast and privacy-first. No uploads, no signup.