Binary/Hex/Decimal Converter

Convert numbers instantly between binary, decimal, hexadecimal, and octal - all four update together as you type.

Enter a number in any base — the others update automatically

What Are Number Bases?

A number base (or radix) determines how many unique digits are used before carrying over. Decimal (base 10) is what we use daily. Binary (base 2) uses only 0 and 1, and is the foundation of digital computing. Hexadecimal (base 16) uses 0-9 and A-F, commonly used in programming for compact byte representation. Octal (base 8) uses digits 0-7.

Frequently Asked Questions

A number base (or radix) determines how many unique digits are used before carrying over.

Binary (base 2) uses only 0 and 1, and is the foundation of digital computing.

Hexadecimal (base 16) uses 0-9 and A-F, and is commonly used in programming for compact byte representation.

Octal (base 8) uses digits 0-7.

Yes, binary, decimal, hexadecimal, and octal all update together as you type in this converter.

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