What is UTF-16?

UTF-16 encodes Unicode code points in one or two 16-bit units, using surrogate pairs for characters above U+FFFF. It is the in-memory string representation used by JavaScript, Java and Windows.

2 tools that work with UTF-16

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Text Tools1

String Byte Size CalculatorMeasure text in UTF-8, UTF-16 and UTF-32 bytes, code points and grapheme clusters.

Encoders & Decoders1

Unicode ConverterConvert text between code points, UTF-8, UTF-16, HTML entities and escape sequences.

Related terms

Terms that appear alongside UTF-16 on the same tools.

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