Unicode to UTF-8

Convert Unicode text and code points to UTF-8 bytes in hexadecimal, binary, decimal, and formatted diagnostic tables. Supports emojis, surrogate pairs, and international scripts.

Private • In-browser processing • Zero server uploads

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How to Use Unicode to UTF-8

1
Enter Text or Emojis
Type or paste characters, symbols, or foreign scripts into the input area.
2
Select Byte Format
Choose between Hexadecimal, Binary, Decimal bytes, or the Detailed Table breakdown.
3
Copy Encoded Bytes
The exact byte representation is generated instantly for use in code or debugging.

Key Features

Comprehensive Byte Formats
Export UTF-8 representations in Hex, 8-bit Binary, Decimal, or Unicode Code Points (U+XXXX).
Diagnostic Table View
View a character-by-character breakdown detailing code points and underlying byte sequences.
Full Unicode & Emoji Support
Seamlessly handles 1-byte ASCII, 2-byte Latin/Cyrillic/Greek, 3-byte CJK, and 4-byte astral emojis.
Prefix & Delimiter Customization
Add 0x, 0b, or U+ prefixes and customize spacing.

Common Use Cases

  • Debugging character encoding issues, byte length limits, and database collations.
  • Inspecting multi-byte UTF-8 structures for 4-byte emojis and combining accents.
  • Generating C, Rust, or Python byte literals (0x..) for embedded systems.
  • Educational demonstrations of UTF-8 variable-length byte architecture.

Frequently Asked Questions

UTF-8 is variable-length: standard ASCII uses 1 byte, European/Greek/Cyrillic/Hebrew/Arabic use 2 bytes, CJK and common symbols use 3 bytes, and emojis/historic scripts use 4 bytes.

Yes! Characters above U+FFFF like emojis (e.g. 🚀 U+1F680) are accurately parsed and shown as their full 4-byte UTF-8 sequences (F0 9F 9A 80).

The Table mode renders an aligned table displaying each individual character alongside its code point, hex bytes, binary bytes, and decimal values.

UTF8 to Hexadecimal
Convert UTF-8 encoded text to its hexadecimal byte representation.
UTF8 to Binary
Convert UTF-8 text to its binary bit representation, byte by byte.
Validate UTF8
Check if a sequence of bytes or text is valid UTF-8 and report any errors.
Text to Unicode Font
Convert text to stylized Unicode fonts: bold, italic, script and more.
Spoof Unicode Text
Replace ASCII letters with visually identical Unicode homoglyphs for obfuscation.