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Hex to Binary Converter

Expand hexadecimal into the underlying bits — useful for reading colour values, memory dumps, or protocol fields one bit at a time. Everything runs locally in your browser.

=
11111111

Hex (base 16) in, Binary (base 2) out.

How it works

Each hex digit maps to exactly four bits — a = 1010, f = 1111 — so replace every digit with its nibble and concatenate.

Examples

FAQ

How do I convert hexadecimal to binary?

Each hex digit maps to exactly four bits — a = 1010, f = 1111 — so replace every digit with its nibble and concatenate. Or just paste your hexadecimal value into the box above and the binary result appears instantly.

Does this Hex to Binary converter run in my browser?

Yes. The conversion happens entirely client-side — nothing you type is uploaded — and it uses big-integer math, so even very long hexadecimal numbers convert exactly.

What is the largest number I can convert?

There is no practical limit. Because the converter works with arbitrary-precision integers, a hexadecimal value of any length converts without rounding or overflow.

Need other bases, custom radixes, or two-way editing? Use the full Number Base Converter.

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