Binary to Hex Converter

Each hexadecimal digit maps to exactly 4 binary digits (bits). For example 1111 is f and 1010 is a, so every group of four bits becomes one hex digit.

Hex is far shorter and easier to read than binary. Programmers use it for memory addresses, color codes, byte values and machine state because it packs four bits into a single character.

No. The converter reads the number as a whole, so padding is optional. Leading zeros are ignored, and 11111111 gives the same result as 0011111111.

Yes. It uses BigInt, so values far beyond what a normal JavaScript number can hold stay exact with no rounding errors.

Only 0 and 1, plus spaces for grouping. Anything else, such as a 2 or an 0x prefix, is rejected as an invalid binary number.

No. The conversion runs entirely in your browser, so your binary number never leaves your device.