U+212B "Å" Angstrom Sign Unicode Character
Unicode Version 17.0
Å
U+212B "Å" Angstrom Sign is a typographic symbol representing the angstrom, a unit of length equal to one ten-billionth of a meter, commonly used in physics and chemistry to measure atomic-scale distances. It is visually identical to the Latin capital letter A with a ring above, but it is encoded separately for compatibility with preexisting character sets and legacy systems where it was treated as a distinct character. The Angstrom Sign is most often used in scientific notation, such as specifying wavelengths of light or atomic radii, and while it can be substituted by the combining ring character with an "A", having its own code point ensures reliable representation in specialized documents.
General Properties
| Code Point | U+212B |
| Version Added | 1.1 |
| Name | Angstrom Sign |
| Unicode 1.0 Name | Angstrom Unit |
| Block | Letterlike Symbols |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Canonical |
| Decomposition Mapping | "Å" U+00C5 Latin Capital Letter A with Ring Above |
Encodings
| HTML Decimal Encoding | Å |
| HTML Hex Encoding | Å |
| UTF-8 Encoding | 0xE2 0x84 0xAB |
| UTF-16 Encoding | 0x212B |
| UTF-32 Encoding | 0x0000212B |
| C/C++/Java Escape | \u212b |
Unicode Properties
| Full Composition Exclusion | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ambiguous (Alphabetic or Ideographic) |
| East Asian Width | Ambiguous |
| Uppercase | Yes |
| Simple Lowercase Code Point | "å" U+00E5 Latin Small Letter A with Ring Above |
| Lowercase Code Point | "å" U+00E5 Latin Small Letter A with Ring Above |
| Simple Case Folding | "å" U+00E5 Latin Small Letter A with Ring Above |
| Case Folding | "å" U+00E5 Latin Small Letter A with Ring Above |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "å" U+00E5 Latin Small Letter A with Ring Above |
| NFKC Simple Casefold | "å" U+00E5 Latin Small Letter A with Ring Above |
| 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 | Upper |