Utf8 encode online — see raw bytes
Debugging encoding issues starts with the byte view. This utf8 encoder shows exactly how characters map to UTF-8 — including multi-byte sequences for accents and emoji.
UTF-8 Encode Online — UTF8 Decoder Free
Free · Browser-only · No upload
UTF-8 Encode & Decode Online
Use this utf8 encoder and utf8 decoder to move between text and bytes. Utf8 encode online for hex dumps, utf8 decode online to recover text — a simple utf8 converter built on native TextEncoder.
UTF-8 bytes17
ModeEncode
Text input
UTF-8 bytes output
UTF-8 encoder and decoder guide
Utf8 decode online — hex to text
Paste hex from logs, packet captures, or firmware dumps. The utf8 decoder rebuilds the original string when the bytes are valid UTF-8.
Utf8 converter — one tool, both directions
Switch modes or swap output into input for round-trip checks. This utf8 converter keeps everything local for sensitive strings and API payloads.
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Common questions
UTF-8 FAQ
What does UTF-8 encode online mean?
It converts human-readable text into the raw byte sequence UTF-8 uses for storage and transmission — usually shown as hexadecimal values.
How do I utf8 decode online?
Paste hex bytes (space-separated or continuous), switch to Decode mode, and read the text output. Invalid byte sequences show an error.
Is this utf8 converter the same as URL encoding?
No. This shows raw UTF-8 bytes. Percent-encoding (%C3%A9) is for URLs. Use our URL Encoder for that.
Why do emoji use four bytes?
UTF-8 is variable length. ASCII letters are one byte; many emoji need four bytes in UTF-8 even though they are one character.
Is my text uploaded?
No. TextEncoder and TextDecoder run entirely in your browser.
What hex format should I use?
Spaced hex is easiest to read. Compact hex has no spaces. Decimal shows comma-separated byte values (0–255).