U+00E4 "ä" Latin Small Letter A with Diaeresis Unicode Character
Unicode Version 17.0
ä
U+00E4 "ä" Latin Small Letter A with Diaeresis is a precomposed character representing the letter "a" with an umlaut or diaeresis, two dots placed above it, used in several languages including German, Swedish, Finnish, and Estonian to denote a distinct vowel sound typically pronounced as a fronted or centralized open vowel. In German, it functions as an umlaut derived from historical vowel harmony, while in other languages like Finnish it is a standalone letter in the alphabet. This character is encoded in the Latin-1 Supplement block of Unicode, allowing for consistent digital representation across platforms and systems.
General Properties
| Code Point | U+00E4 |
| Version Added | 1.1 |
| Name | Latin Small Letter A with Diaeresis |
| Unicode 1.0 Name | Latin Small Letter A Diaeresis |
| Block | Latin-1 Supplement |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "a" U+0061 Latin Small Letter A "̈" U+0308 Combining Diaeresis |
Encodings
| HTML Decimal Encoding | ä |
| HTML Hex Encoding | ä |
| UTF-8 Encoding | 0xC3 0xA4 |
| UTF-16 Encoding | 0x00E4 |
| UTF-32 Encoding | 0x000000E4 |
| C/C++/Java Escape | \u00e4 |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Lowercase | Yes |
| Simple Uppercase Code Point | "Ä" U+00C4 Latin Capital Letter A with Diaeresis |
| Simple Titlecase Code Point | "Ä" U+00C4 Latin Capital Letter A with Diaeresis |
| Uppercase Code Point | "Ä" U+00C4 Latin Capital Letter A with Diaeresis |
| Titlecase Code Point | "Ä" U+00C4 Latin Capital Letter A with Diaeresis |
| Cased | Yes |
| Changes When Casemapped | Yes |
| Changes When Titlecased | Yes |
| Changes When Uppercased | Yes |
| Script | Latin |
| Script Extensions | Latin |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | Lower |