Unicode Converter
Text Input
Unicode Output
Unicode Input
Decoded Text
About Unicode Encoding
What is Unicode?
Unicode is a computing industry standard for consistent encoding and representation of text. It covers characters from most writing systems worldwide, including Latin, Chinese, Arabic, Emoji, and more. Each character is assigned a unique code point.
Unicode Formats
Common formats include \uXXXX (JavaScript/JSON), U+XXXX (standard notation), &#xXXXX; (HTML hex), and &#NNNN; (HTML decimal). Our tool uses the \uXXXX format which is widely compatible with programming languages.
Use Cases
Unicode encoding is essential for internationalization (i18n), storing special characters in databases, JSON data handling, and ensuring cross-platform compatibility in software development.
Unicode Encoding FAQ
What is the difference between Unicode and UTF-8?
Unicode is a character set that assigns unique numbers (code points) to characters. UTF-8 is an encoding scheme that represents these code points as bytes. UTF-8 is variable-length (1-4 bytes per character) and is backward compatible with ASCII. Other encodings include UTF-16 and UTF-32.
How do I use Unicode in JavaScript?
In JavaScript, you can use \uXXXX escape sequences directly in strings: "Hello \u4e16\u754c" represents "Hello 世界". For code points above U+FFFF, use \u{XXXXX} syntax in ES6+. The String.fromCharCode() and charCodeAt() methods also work with Unicode.
Why do some characters show as boxes or question marks?
This happens when your system doesn't have a font that supports those Unicode characters. The character exists in Unicode, but your device can't display it. Installing additional fonts or using a different browser may help display these characters correctly.
How many characters does Unicode support?
Unicode can theoretically support over 1.1 million code points (U+0000 to U+10FFFF). As of Unicode 15.0, there are over 149,000 assigned characters including letters, symbols, emoji, and historic scripts. New characters are added with each Unicode version update.
Common Unicode Ranges
Basic Latin (ASCII)
U+0000 to U+007F - Standard English letters, numbers, and punctuation. These are the first 128 characters and are compatible with ASCII encoding.
CJK Characters
U+4E00 to U+9FFF - Chinese, Japanese, and Korean ideographs. This block contains over 20,000 commonly used CJK characters.
Emoji
Various blocks including U+1F600 to U+1F64F - Emoticons and pictographs. Modern emoji often use multiple code points combined with Zero Width Joiners.
Arabic Script
U+0600 to U+06FF - Arabic letters and marks. Arabic is written right-to-left and characters change shape based on position in a word.