Number & Data
Reverse byte order and interpret hex values as 16-bit, 32-bit, or 64-bit integers in both endian formats.
Input Hex box — a 0x prefix and any spaces are handled automatically.16-bit, 32-bit, or 64-bit radio buttons to control how bytes are grouped for interpretation.Byte-Reversed (Little-Endian) box — it updates as you type.Copy LE to copy the little-endian hex to your clipboard, or Copy to copy your original input.Group Interpretation to see each byte group's big-endian and little-endian integer values side by side.Clear to reset the input and start over.When a multi-byte integer, checksum, or timestamp looks wrong, the culprit is often swapped endianness. Reverse the bytes and compare values to confirm LE vs BE.
Network byte order is big-endian, but most CPUs (x86, ARM) are little-endian. Convert captured payloads to match what your machine expects.
Formats like ELF, BMP, and WAV store multi-byte fields in little-endian. Group bytes by 16, 32, or 64 bits to read the actual integer values.
Debuggers and hex editors show raw bytes in order. See how a sequence like DEADBEEF changes meaning across widths and byte orders.
Compare the same input at 16, 32, and 64-bit widths to see exactly how byte order changes the resulting numeric value.
Everything runs in your browser. Nothing is uploaded, logged, or sent to a server — safe for sensitive binary payloads.
Endianness is the order in which bytes of a multi-byte value are stored or transmitted. Big-endian writes the most significant byte first; little-endian writes the least significant byte first.
It takes a hex string, reverses the byte order to produce the little-endian form, and groups the bytes into 16, 32, or 64-bit chunks to show the big-endian and little-endian integer value of each.
For a value like 0xDEADBEEF, big-endian stores the bytes in that order (DE AD BE EF), while little-endian stores them reversed (EF BE AD DE). The bytes are identical — only their order differs.
Hex digits always come in pairs (one byte each). If you enter an odd number of digits, the tool prepends a 0 to form a complete byte, so ABC is read as 0ABC.
No. The Byte-Reversed (Little-Endian) output always reverses the entire sequence. The width buttons only control how Group Interpretation chunks the bytes into 16, 32, or 64-bit groups.
It lists each full byte group's offset, plus its big-endian (BE) and little-endian (LE) integer values in decimal and hex. Leftover bytes smaller than the selected width are ignored.
Never. All conversion happens locally in JavaScript. Your input is not sent to, stored on, or logged by any server.