Hex ↔ Text Converter

Convert text to hexadecimal (hex) code, or decode hex code back to text. UTF-8-based, special characters are fully supported.

Runs 100% in your browser — your data is never sent to a server.

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Frequently Asked Questions

Yes. The text is first converted to UTF-8 bytes with TextEncoder, so every character — including multi-byte characters — is correctly converted to hex code and decoded back.

There are two possible reasons: (1) the hex data has an odd number of digits (each byte requires exactly 2 digits), or (2) the hex data doesn't form a valid UTF-8 byte sequence (e.g. a random/corrupted hex string). In both cases, check the data and try again.

Space-separated (48 65), concatenated (4865), 0x-prefixed (0x48 0x65), and \x-prefixed (\x48\x65) formats are all supported. The "Hex → Text" tab auto-detects all of these formats — even if you paste a mix, it strips prefixes/whitespace and decodes it.

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