Number Base Converter

Convert numbers between binary, octal, decimal and hexadecimal.

Binary

11111111

Octal

377

Decimal

255

Hexadecimal

FF

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How to Use

1Open the Number Base Converter calculator.
2Enter your values into the fields provided.
3Your result updates instantly as you type.
4Use the result as needed. Tracking tools may keep entries in this browser’s local storage until you reset them or clear site data.

About this tool

Convert numbers between binary, octal, decimal and hexadecimal. Solve it instantly in your browser — accurate, fast, and free to use.

Frequently Asked Questions