Binary to Hex Converter – Four Bits at a Time

Working with a long binary dump and want a shorter, readable version? This free binary to hex converter turns binary into hexadecimal, where every 4 bits become a single hex digit — so 1010 becomes A and 11111111 becomes FF. Hex is simply a compact way of writing the same bits. Everything runs in your browser, so nothing is uploaded, nothing is stored, and no signup is needed.

How to use this binary to hex converter

Three quick steps — no signup, no cost.

1Paste your binary

Enter 0s and 1s, with or without spaces between groups — the tool reads the whole string as one binary number.

2Convert to hex

The converter groups the bits in fours from the right, pads the leftmost group with leading zeros if needed, and turns each group into its hex digit.

3Copy the result

Copy the hex output, in capitals or lowercase as you prefer, and paste it into your code or notes.

Why this binary to hex converter is worth using over doing it by hand

Grouping bits by hand is slow and one slipped digit changes the value — the grouping rule below is the whole trick.

Four bits per digit, always

Each hex digit holds exactly 4 bits, so binary shrinks to a quarter of its length — 11111111 becomes just FF.

Grouped from the right

Grouping starts at the least significant bit on the right, so a short leftmost group is padded with leading zeros, never with trailing ones.

Uppercase or lowercase

Hex letters A–F are the same value in either case, so the tool lets you pick the style your codebase uses.

Private by design

Conversion runs in your browser, so your data is never uploaded or stored.

Binary to Hex Converter FAQs

Short, direct answers to the questions readers ask most.

Starting from the right, split the binary into groups of 4 bits, pad the leftmost group with leading zeros if it is short, then replace each group with its hex digit — 1010 is A, 1111 is F.

Because one hex digit replaces four bits, so the output is roughly a quarter as long — that compression is exactly why programmers read hex dumps instead of raw binary.

No. Uppercase A–F and lowercase a–f mean the same values, so pick whichever style matches the rest of your code.

They are kept inside the leftmost group during conversion, but a fully leading group of zeros may be dropped from the final number — the value is unchanged.

Yes — free, with no account and no signup.