А is the Unicode character CYRILLIC CAPITAL LETTER A, code point U+0410 (decimal 1040) in the Cyrillic block, added in Unicode 1.1. In HTML write А, and in UTF-8 it is the 2 bytes D0 90.
Codes
| Where | How to write it |
|---|---|
| Code point | U+0410 |
| Decimal | 1040 |
| UTF-8 bytes | D0 90 |
| UTF-16 (big-endian) | 0410 |
| UTF-32 | 00000410 |
| HTML decimal | А |
| HTML hex | А |
| HTML named | А |
| CSS | \410 |
| JavaScript | \u0410 |
| JSON | \u0410 |
| Python | \u0410 |
| Python by name | \N{CYRILLIC CAPITAL LETTER A} |
| Java, C# | \u0410 |
| Rust, Swift | \u{410} |
| Go, C, C++ | \u0410 |
| URL (percent-encoded) | %D0%90 |
JavaScript and JSON strings store text as UTF-16, so this character is one code unit long. Python 3 strings count code points, so its length there is 1.
Properties
| Property | Value |
|---|---|
| Name | CYRILLIC CAPITAL LETTER A |
| Code point | U+0410 (decimal 1040) |
| Block | Cyrillic (U+0400–U+04FF) |
| General category | Lu: Uppercase letter |
| Script | Cyrillic |
| Bidirectional class | L: Left-to-right |
| Mirrored in right-to-left text | No |
| First in Unicode version | 1.1 |
Upper and lower case
- а U+0430 Cyrillic Small Letter A — Lowercase
Nearby in Cyrillic
- Ј U+0408 Cyrillic Capital Letter Je
- Љ U+0409 Cyrillic Capital Letter Lje
- Њ U+040A Cyrillic Capital Letter Nje
- Ћ U+040B Cyrillic Capital Letter Tshe
- Ќ U+040C Cyrillic Capital Letter Kje
- Ѝ U+040D Cyrillic Capital Letter I With Grave
- Ў U+040E Cyrillic Capital Letter Short U
- Џ U+040F Cyrillic Capital Letter Dzhe
- Б U+0411 Cyrillic Capital Letter Be
- В U+0412 Cyrillic Capital Letter Ve
- Г U+0413 Cyrillic Capital Letter Ghe
- Д U+0414 Cyrillic Capital Letter De
- Е U+0415 Cyrillic Capital Letter Ie
- Ж U+0416 Cyrillic Capital Letter Zhe
- З U+0417 Cyrillic Capital Letter Ze
- И U+0418 Cyrillic Capital Letter I
All 256 characters: Cyrillic.
Official reference
Questions people ask
- What is the HTML code for А?
- Use the named entity А, or А (decimal) or А (hex).
- What is the UTF-8 encoding of U+0410?
- D0 90 (hex), 2 bytes. In a URL it is %D0%90.
- How do I write U+0410 in JavaScript or Python?
- JavaScript: \u0410. Python: \u0410.
Source
Unicode Character Database 18.0.0 (Unicode License v3); HTML entity names from the WHATWG HTML Standard (CC BY 4.0). The encodings above are computed from the code point and checked against Python's encoders. How the character looks depends on your fonts.
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