Binary / Hex / Decimal Converter

Convert numbers between binary, hexadecimal, octal, and decimal number systems.

Enter Number

From Base

Binary (Base 2)

Octal (Base 8)

Decimal (Base 10)

Hexadecimal (Base 16)

How It Works

Enter a number and select its current base. The calculator will automatically convert it to all four number systems: binary, octal, decimal, and hexadecimal.

About this Calculator

The Binary/Hex/Decimal Converter is a free, easy-to-use tool for binary, hex, octal. Simply enter your values and get instant, accurate results — no signup, no ads, no tracking. All calculations run locally in your browser, so your data stays completely private.

Privacy Note: All calculations are performed locally in your browser. No data is ever sent to a server or third party.