TypeKitToolsOnline Utilities & Symbols

unicode

Private (Runs in Browser)

Free Utility

UTF-16 Converter & Surrogate Pair Inspector

Convert text to UTF-16 Big-Endian, Little-Endian, and \uXXXX escapes, with surrogate pair breakdown (High/Low surrogates) for astral plane codepoints.

Loading tool engine...

Frequently Asked Questions

In UTF-16, characters above U+FFFF (astral planes, including emojis) cannot fit into a single 16-bit code unit. They are encoded as a pair of 16-bit units: a High Surrogate (0xD800-0xDBFF) followed by a Low Surrogate (0xDC00-0xDFFF).

Related Utilities

Utf8 Encoder Decoder Unicode Normalizer Character Inspector

Output Format:

INPUT UNICODE TEXT

31 chars • 7 words

UTF-16 OUTPUT (ESCAPES)

192 chars • 192 B

\u0054\u0079\u0070\u0065\u004B\u0069\u0074\u0020\u{1F680}\u0020\u20AC\u0031\u0030\u0030\u0020\u2014\u0020\u{1D11E}\u0020\u004D\u0075\u0073\u0069\u0063\u0061\u006C\u0020\u0043\u006C\u0065\u0066

16-bit Code Units

33

Total Bytes

66 B

BMP Characters

29

Surrogate Pairs (Astral)

2

UTF-16 Code Unit & Surrogate Pair Inspection

31 characters analyzed

Glyph	Codepoint	Plane	16-bit Code Units	High Surrogate	Low Surrogate
T	U+0054	BMP (Basic Multilingual Plane)	0x0054	—	—
y	U+0079	BMP (Basic Multilingual Plane)	0x0079	—	—
p	U+0070	BMP (Basic Multilingual Plane)	0x0070	—	—
e	U+0065	BMP (Basic Multilingual Plane)	0x0065	—	—
K	U+004B	BMP (Basic Multilingual Plane)	0x004B	—	—
i	U+0069	BMP (Basic Multilingual Plane)	0x0069	—	—
t	U+0074	BMP (Basic Multilingual Plane)	0x0074	—	—
	U+0020	BMP (Basic Multilingual Plane)	0x0020	—	—
🚀	U+1F680	Astral Plane (U+10000+)	0xD83D 0xDE80	0xD83D	0xDE80
	U+0020	BMP (Basic Multilingual Plane)	0x0020	—	—
€	U+20AC	BMP (Basic Multilingual Plane)	0x20AC	—	—
1	U+0031	BMP (Basic Multilingual Plane)	0x0031	—	—
0	U+0030	BMP (Basic Multilingual Plane)	0x0030	—	—
0	U+0030	BMP (Basic Multilingual Plane)	0x0030	—	—
	U+0020	BMP (Basic Multilingual Plane)	0x0020	—	—
—	U+2014	BMP (Basic Multilingual Plane)	0x2014	—	—
	U+0020	BMP (Basic Multilingual Plane)	0x0020	—	—
𝄞	U+1D11E	Astral Plane (U+10000+)	0xD834 0xDD1E	0xD834	0xDD1E
	U+0020	BMP (Basic Multilingual Plane)	0x0020	—	—
M	U+004D	BMP (Basic Multilingual Plane)	0x004D	—	—
u	U+0075	BMP (Basic Multilingual Plane)	0x0075	—	—
s	U+0073	BMP (Basic Multilingual Plane)	0x0073	—	—
i	U+0069	BMP (Basic Multilingual Plane)	0x0069	—	—
c	U+0063	BMP (Basic Multilingual Plane)	0x0063	—	—
a	U+0061	BMP (Basic Multilingual Plane)	0x0061	—	—
l	U+006C	BMP (Basic Multilingual Plane)	0x006C	—	—
	U+0020	BMP (Basic Multilingual Plane)	0x0020	—	—
C	U+0043	BMP (Basic Multilingual Plane)	0x0043	—	—
l	U+006C	BMP (Basic Multilingual Plane)	0x006C	—	—
e	U+0065	BMP (Basic Multilingual Plane)	0x0065	—	—
f	U+0066	BMP (Basic Multilingual Plane)	0x0066	—	—