What hex formats are accepted?

The decoder accepts continuous hex (4a6f6e), space-separated bytes (4a 6f 6e), 0x-prefixed pairs (0x4a 0x6f 0x6e), and backslash-x sequences (\x4a\x6f\x6e). Commas, colons, and hyphens used as separators are also stripped.

What encoding is used for decoding bytes to text?

Bytes are decoded as UTF-8. Multi-byte sequences (such as accented or CJK characters) are handled correctly as long as the hex input represents valid UTF-8. Invalid byte sequences are replaced with the Unicode replacement character (U+FFFD).

What does the Byte Grid show?

The Byte Grid displays each decoded byte as a card showing its hex value, decimal value, and the rendered character (or a dot for non-printable bytes). It is useful for inspecting binary data byte by byte.

What happens with odd-length hex strings?

If the cleaned hex string has an odd number of characters, a leading zero is prepended to make it valid (e.g. "abc" is treated as "0abc").

Is there a size limit?

The tool runs entirely in your browser with no server involved. Very large inputs (tens of thousands of bytes) may cause the Byte Grid to render slowly; the text output has no practical limit.

Hex Decoder

Name: Hex Decoder
Availability: InStock
Author: Nham Vu

Paste a hex string and instantly decode it back to plain text or view the raw byte values.

Hex Input

Output Mode

Plain text (UTF-8 decoded) Byte grid (hex + decimal + char)

Stats

Input bytes 0

Output chars 0

Decoded Output

Common Hex → ASCII

0x20Space

0x41A

0x61a

0x300

0x5AZ

0x7Az

0x0ALF

0x0DCR

0x00NUL

Summary

Paste a hex string and instantly decode it back to plain text or view the raw byte values.

How it works

Paste or type a hexadecimal string into the input area.
The tool strips common prefixes (0x, \x) and separators automatically.
Each pair of hex digits is converted to its byte value.
The bytes are decoded as UTF-8 text and displayed in the output area.
Switch to Byte Grid view to inspect each byte value individually.
Click "Copy Output" to copy the decoded result to your clipboard.

Use cases

Decode hex-encoded strings found in debug logs or network traces.
Reverse hex payloads captured from binary protocols.
Inspect raw byte content from memory dumps or packet captures.
Decode hex literals embedded in source code or SQL.
Verify the byte-level content of encoded Unicode strings.
Convert hex color values or magic byte signatures to readable form.
Cross-check output from the companion Hex Encoder tool.

Frequently Asked Questions

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Last updated: 2026-05-23 · Reviewed by Nham Vu