Hex Dump Viewer - Text or File to Hex and ASCII

Classic Hex Dump Format

Each row shows a byte offset (in hexadecimal), up to 16 bytes of data in hex pairs, and a corresponding ASCII column where non-printable bytes appear as a period. This format is used by tools like xxd, od -x, and most hex editors.

Byte grouping and endianness

Multi-byte values like 32-bit integers are stored differently depending on architecture. Little-endian (x86, ARM by default) stores the least significant byte first: the integer 0x0A0B0C0D is stored as 0D 0C 0B 0A. Big-endian (network byte order, MIPS, SPARC) stores the most significant byte first: 0A 0B 0C 0D. This distinction is critical when interpreting multi-byte fields in binary file formats or network protocol analysis.

Common file magic numbers

Use Cases

Hex dumps are useful for debugging binary protocols, inspecting file magic bytes, analysing encoding issues, and understanding how text is stored at the byte level. Additional uses include identifying corrupted files by comparing expected vs. actual magic bytes, analysing network packet captures, and reverse engineering proprietary binary file formats.