Hex to Text Converter

The Hex to Text tool converts hexadecimal byte sequences into readable text. Hexadecimal represents each byte as two hex digits (00-FF), making it much more compact than binary while remaining human-readable. \"48 69\" in hex is the ASCII for \"Hi\". Decoding hex back to text is common when reverse engineering data formats, reading hexdump output, decoding URL-encoded bytes, or handling binary data that was transmitted as hex text.

The tool accepts hex in every common format: space-separated bytes (48 69), with 0x prefixes (0x48 0x69), continuous without separators (4869), and with any common delimiter (48-69, 48,69). ASCII mode decodes each byte as a character. UTF-8 mode handles multi-byte sequences correctly for Unicode characters, emoji, and non-Latin scripts. Reverse conversion (text to hex) is handled by the companion tool. All processing runs in your browser so confidential hex data (keys, tokens, scraped protocol data) never leaves your machine.

Hexadecimal is base-16 (0-9 and A-F). Each byte (8 bits) fits in exactly 2 hex digits: 00 (zero) through FF (255). This makes hex a compact, human-readable encoding for binary data — much easier than pure binary (8 bits per byte) and more compact (2 hex digits = 8 bits = 1 byte).

Hex-to-byte parsing:
1. Strip all whitespace and common separators (spaces, commas, dashes)
2. Strip 0x or \\x prefixes
3. Group remaining hex digits into pairs (each pair is one byte)
4. Convert each pair to its numeric byte value (0-255)

If the total number of hex digits is odd, the input is invalid — bytes must come in complete pairs.

Bytes to text:
- ASCII: each byte value 0-127 maps to an ASCII character. Values 128-255 are outside ASCII and either get shown as replacement characters or trigger a warning.
- UTF-8: the byte sequence is decoded as UTF-8, handling 1-4 byte sequences for Unicode codepoints.

Common hex encoding contexts:
- URL encoding: %48%69 (hex with % prefix) — use the URL Encoder tool for these
- HTTP hexdump: 48 69 across aligned columns with ASCII sidebar
- Database BLOB display: 0x48692148 — continuous with single prefix
- Programming language: 0x48, 0x69 — comma-separated with prefixes

The tool handles all these forms by stripping prefixes and normalizing before parsing.

UTF-8 multi-byte handling: starts with 110xxxxx (2-byte), 1110xxxx (3-byte), or 11110xxx (4-byte), followed by 10xxxxxx continuation bytes. The tool detects these patterns and decodes sequences correctly.

Non-printable characters: bytes 0x00-0x1F (except common whitespace) and 0x7F don\u2019t have visible glyphs. The tool shows them as escape sequences (\\x00, \\n, \\t) or Unicode replacement character.

Performance: hex decoding is O(n) and very fast. Multi-megabyte hex converts in milliseconds.

Compared to a Python one-liner (bytes.fromhex(hex_str).decode()), this tool is faster for one-off decoding and visualizes the byte-to-character mapping clearly.

Compared to command-line xxd -r -p, this tool has a browser UI and handles UTF-8 correctly. xxd is better for pipelines; this tool for interactive work.

Compared to other online hex decoders, this one handles UTF-8 multi-byte sequences reliably (many assume ASCII only) and supports multiple input formatting conventions.