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Unicode Converter

Convert between characters, code points and escape sequences.

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Questions
Why do some emoji produce two \u escapes?
JavaScript strings are sequences of UTF-16 code units. Characters above U+FFFF, which includes most emoji, are stored as a surrogate pair of two code units. The code point format (U+XXXX) shows the single true code point instead, which is usually what you want when looking a character up.
What is the difference between a code point and a UTF-8 byte?
A code point is the abstract number assigned to a character, such as U+00E9 for é. UTF-8 is one way of serialising that number into bytes; é becomes the two bytes C3 A9. Code points identify characters, bytes are what travels over the wire.