Hex to Binary

Hexadecimal to binary conversion translates base-16 numbers (using digits 0-9 and letters a-f) into base-2 notation composed entirely of 0s and 1s. Because each hexadecimal digit maps directly to a four-bit binary group, this conversion is fundamental in computing, digital electronics, and low-level programming. Engineers and developers regularly convert hex values to binary when analyzing memory dumps, inspecting register contents, debugging network packets, or working with bitwise operations.

This free online converter supports everything from single hex digits to arbitrarily large hexadecimal numbers using BigInt for full precision. You can convert multiple hex values at once by entering each on a separate line, and any 0x prefix is automatically stripped. All processing runs entirely in your browser — no data is ever sent to a server, so your input stays completely private. No sign-up, no ads, just instant hex-to-binary conversion.