Frequently Asked Questions
What are Unicode escape sequences?
Unicode escape sequences use the format \uXXXX to represent Unicode characters, where XXXX is the hex value of the character's code point. For example, the Chinese character 'ε₯½' has code point U+597D, escaped as \u597D. This encoding is widely used in JSON, JavaScript, Java, and other programming languages for non-ASCII characters.
What encoding format conversions are supported?
Supported formats: 1) Unicode escape (\uXXXX) - most common; 2) Hex entity (&#xXXXX;) - HTML/XML; 3) Decimal entity (&#XXXXX;) - HTML numeric; 4) Percent encoding (%XX%XX) - URL encoding; 5) Raw code point (U+XXXX) - academic format. All support bidirectional conversion.
What's the difference between Unicode conversion and character encoding?
This tool converts characters to their Unicode code point representation, not character encoding conversion (like UTF-8 to GBK). A Unicode code point is each character's unique numeric identifier, unchanged by encoding. For example, 'A' is always U+0041 regardless of UTF-8 or UTF-16 encoding.
Can converted results be used directly in code?
Yes. Unicode escape sequences (\uXXXX) work directly in JavaScript, Java, C#, Python. HTML entities (&#xXXXX; or &#XXXXX;) work in HTML/XML. URL encoding (%XX) works in URLs. The tool labels each output format with its best use case.
What character range is supported?
All Unicode characters are supported, including: 1) Basic Latin (A-Z, a-z); 2) Digits and punctuation; 3) CJK characters (Chinese, Japanese, Korean); 4) Special symbols and Emoji; 5) Math symbols and arrows; 6) Ancient scripts and rare characters. Unicode covers over 140,000 characters.