Is Number Base Converter free?

Yes, completely free with no sign-up required.

This tool runs 100% in your browser. No data is sent to any server.

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Number Base Converter

New

Convert numbers between decimal, binary, hexadecimal, and octal bases instantly.

Number

Input Base

Decimal (10)

255

Binary (2)

11111111

Hexadecimal (16)

Octal (8)

377

What is Number Base Converter?▼

Convert numbers between decimal, binary, hexadecimal, and octal bases instantly.

Is this tool free?▼

Yes, Number Base Converter is completely free. No sign-up, no limits.

Is my data safe?▼

100% safe. This tool runs entirely in your browser. No data is ever sent to any server.

How does Number Base Converter work?▼

Number Base Converter uses modern browser APIs to process everything locally. Nothing is uploaded or stored.