Unicode escape converter

Format	é (U+00E9)	😀 (U+1F600)	Used in
\uXXXX	\u00e9	\ud83d\ude00	JavaScript, JSON, Java
\u{…}	\u{e9}	\u{1f600}	Modern JavaScript (ES6+)
\uXXXX / \UXXXXXXXX	\u00e9	\U0001f600	Python, C, C++
&#…; decimal	é	😀	HTML, XML
&#x…; hex	é	😀	HTML, XML
CSS	\e9	\1f600	CSS content, selectors
%XX	%C3%A9	%F0%9F%98%80	URLs (UTF-8 bytes)
U+ list	U+00E9	U+1F600	Documentation, Unicode charts

Note how the JavaScript/JSON format writes characters above U+FFFF, like emoji, as two \u codes: a surrogate pair. ES6 \u{…} and Python \U write them as one code point.

• Only non-ASCII characters (on by default) leaves plain English letters, digits and punctuation as they are and escapes everything else. café becomes caf\u00e9. Turn it off to escape every character.
• Uppercase hex writes \u00E9 instead of \u00e9. Both are valid; pick what matches your codebase's style.

The note under the result shows three different lengths for your text: characters (code points), UTF-16 code units (what JavaScript's .length reports) and UTF-8 bytes (what a file or network request takes). An emoji, for example, is 1 code point, 2 UTF-16 units and 4 UTF-8 bytes.

The table below lists every character (up to 300) with its code point, decimal value, JS/JSON escape, HTML entity and URL encoding, and you can download it as CSV.

Every Unicode character has a code point, a number written as U+ followed by hex digits: A is U+0041, é is U+00E9, € is U+20AC and 😀 is U+1F600. Encodings store those numbers as bytes:

Character	Code point	UTF-16 units	UTF-8 bytes
A	U+0041	1	1 (41)
é	U+00E9	1	2 (C3 A9)
€	U+20AC	1	3 (E2 82 AC)
😀	U+1F600	2	4 (F0 9F 98 80)

That's why string lengths differ between languages and tools, and why escapes look different in each format.

Switch to Escape → text and paste escaped text. With Auto-detect, all formats are recognized, even mixed together in one string: \u00e9, \u{1f600}, \U0001f600, é, é, named entities such as &, <,   and ©, %C3%A9 and U+00E9. Simple JavaScript escapes like \n and \t are converted too.

If you choose a specific input format, only that format is decoded, which avoids surprises when the text legitimately contains other backslashes or percent signs. When decoding CSS, choose the CSS format explicitly, so that sequences like \b or \0 are read as hexadecimal code points rather than JavaScript escapes. The note tells you how many escape sequences were converted.

• Fixing JSON and logs that show \u00e9 instead of é: paste and decode.
• Embedding special characters in source code that must stay ASCII.
• Reading URL-encoded parameters like %E2%9C%93.
• Writing HTML entities for characters that are hard to type.
• Debugging encoding problems by looking at the actual code points of suspicious text. Pair it with invisible character to find hidden characters.

For converting text to binary or hex bytes, see the binary translator. Everything runs in your browser.