Unicode is an international character encoding standard that assigns a unique numeric code (code point) to virtually every character in the world. It covers texts, symbols, emoji, and more from various languages, solving compatibility issues between different encoding systems.

What's the difference between \u, &# and U+ formats?

\uXXXX is the Unicode escape format used in JavaScript/Java. &#XXXX; is the numeric character reference format used in HTML. U+XXXX is the standard Unicode notation used in documentation and specifications. They all represent the same code point, just with different syntax.

Why are some Unicode encodings longer than 4 digits?

Characters in the Basic Multilingual Plane (BMP) use 4 hexadecimal digits (\u0000-\uFFFF). Characters outside the BMP (such as some emoji and rare Chinese characters) need 5-6 digits. In JavaScript, these are represented using surrogate pairs or the \u{XXXXX} syntax.

What is the relationship between Unicode and UTF-8?

Unicode defines the mapping between characters and code points. UTF-8 is one implementation encoding of Unicode. UTF-8 encodes a character in 1-4 bytes, with ASCII characters using just 1 byte. There are other encoding methods like UTF-16 and UTF-32.

Unicode Converter

Unicode encoding converter

\uXXXX &#XXXX; U+XXXX

Input

Output

Unicode Converter Usage Guide

Main Features

Chinese to Unicode - Convert Chinese characters to Unicode encoding
Unicode to Chinese - Convert Unicode encoding to Chinese characters
Multiple Formats - Supports \u, &#, and U+ formats

Use Cases

Frontend internationalization string encoding
Safe display of Chinese in HTML
Deobfuscate Unicode-encoded content

Unicode Converter

Unicode Converter Usage Guide

Main Features

Use Cases

常见问题

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