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U+01DE

LATIN CAPITAL LETTER A WITH DIAERESIS AND MACRON

General category
Uppercase Letter Lu
Unicode block
Latin Extended-B
Combining class
0
Bidirectional class
L
Mirrored
No
Decomposition
00C4 0304

U+01DE LATIN CAPITAL LETTER A WITH DIAERESIS AND MACRON is a Unicode 16.0.0 character in the Uppercase Letter category. It belongs to the Latin Extended-B block.

Case variants

Default Unicode case mappings. A result can contain several code points; language- and context-specific casing may differ. Titlecase here maps this character, not a whole sentence.

Encodings & representations

Choose the representation you need, then copy its value.

Code point

U+01DE

Decimal value

478

HTML decimal reference

Ǟ

HTML hexadecimal reference

Ǟ

UTF-8 bytes (hex)

C7 9E

UTF-16 code units (hex)

01DE

UTF-32 code unit (hex)

000001DE

URL percent-encoded UTF-8

%C7%9E

C# Unicode escape

\u01DE

JavaScript Unicode escape

\u01DE

JSON Unicode escape

\u01DE

CSS Unicode escape (trailing space)

\01DE
About these encodings
  • ASCII positions run from 0 to 127. Position cards show the decimal byte value followed by hexadecimal.
  • “Extended ASCII” is not a single encoding. ISO-8859-1 (Latin-1) and Windows-1252 are shown separately; they differ at bytes 128–159. Windows-1252 leaves five of those bytes undefined.
  • Legacy position cards appear only when the character has an exact mapping. For example, the euro sign is Windows-1252 byte 128 (0x80), but has no ASCII or Latin-1 position. A legacy byte is not necessarily the Unicode code point or its UTF-8 encoding.
  • Percent encoding lists every UTF-8 byte; URL-safe characters do not normally need encoding.
  • JSON escapes omit the surrounding quotes.
  • UTF code units are not byte-order-specific.
  • HTML parsers remap numeric references for U+0000 and some control characters, so these may not round-trip.