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Hex to Binary Converter

Convert hexadecimal numbers (base 16) to binary (base 2) instantly. Each hex digit expands to exactly 4 binary bits — paste your hex value with or without the 0x prefix and get the full binary result.

100% client sideInstant resultNo data sent
Hexadecimal to Binary
Hexadecimal (Base 16)
Binary (Base 2)
Result appears here...

Frequently asked questions

4 answers
Replace each hex digit with its 4-bit binary equivalent. For example, 0xA3 → A = 1010, 3 = 0011 → 10100011. You do not need division — just look up each digit's 4-bit representation. The result can be zero-padded on the left to make a full byte or word.

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About Hex to Binary Conversion

Hex to binary conversion is one of the most common tasks in embedded systems, digital electronics, and network programming. Because hex digits map directly to 4-bit groups, the conversion requires no arithmetic — just a substitution table. Engineers use this when reading memory dump output, analyzing network packets, or working with binary protocols where hex is shown but bit-level analysis is needed. This tool converts any hex string to the full binary expansion in one step.