Unicode Escape Encoder / Decoder
About this Tool
AllThatConverter's Unicode escape converter is a free online tool that converts text to \uXXXX Unicode escape sequences and decodes escape sequences back to text. It is useful for JavaScript and Java source code debugging, JSON processing, and character encoding analysis. All processing runs locally in your browser with no uploads. No registration required, completely free.
Processed safely on your device
Everything happens in your browser on this device. Your files are never sent to our servers—so you can use it with peace of mind.
How to Use
Enter or paste the text or Unicode escape sequence you want to convert.
Click 'Convert to Unicode Escape' or 'Decode to Text'.
The result appears instantly in the output area.
Click 'Copy' to copy the result to your clipboard.
Key Scenarios & Use Cases
JavaScript Source Code Debugging
Convert \uXXXX escape sequences in JavaScript source to their actual characters, or escape characters for embedding in code.
JSON Data Processing
Decode Unicode escape sequences found in JSON files, or generate escaped JSON strings from arbitrary text.
Character Encoding and Encoding Bug Debugging
Inspect individual Unicode code points to diagnose garbled text and encoding issues.
Regex Pattern Character Verification
Verify that characters in Unicode-escaped regex patterns correspond to the intended code points.
Frequently Asked Questions (FAQ)
\uXXXX represents BMP characters (U+0000–U+FFFF) with 4 hex digits. \UXXXXXXXX (8 digits) covers all Unicode code points including supplementary characters like emoji (above U+FFFF).
Yes. Emoji and other characters above U+FFFF are represented as surrogate pairs in \uXXXX\uXXXX format, or as \UXXXXXXXX.
Yes. For example, 'あ' is U+3042, so it becomes \u3042. All Japanese characters can be converted to and from \uXXXX sequences.
No. All processing runs locally in your browser. Nothing is transmitted externally.