UnicodeCharactercom
𝐀
U+1D400 Β· MATHEMATICAL BOLD CAPITAL A

Mathematical Bold Capital A

  • CodepointU+1D400
  • NameMATHEMATICAL BOLD CAPITAL A
  • Decimal119808
  • BlockMathematical Alphanumeric Symbols (U+1D400–U+1D7FF)
  • Plane1 β€” Supplementary Multilingual Plane
  • ScriptCommon
  • CategoryLu β€” Uppercase Letter
  • Unicode version3.1 (2001)
  • Bidi classL β€” Left-to-Right
  • Combining class0
  • East Asian widthN β€” Neutral
  • MirroredNo

About this character

U+1D400 (𝐀) is MATHEMATICAL BOLD CAPITAL A, an uppercase letter in the Mathematical Alphanumeric Symbols block. Its script is Common: it is shared by many writing systems rather than belonging to one. It was added in Unicode 3.1 (2001).

It is a font variant of U+0041 A (compatibility decomposition <font>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+0041 A. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

How to type 𝐀

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Encodings & escapes

UTF-8 encoder β†’
UTF-8F0 9D 90 804 bytes
UTF-16D835 DC00surrogate pair
UTF-320001D4004 bytes
HTML decimal&#119808;
HTML hex&#x1D400;
CSS\1D400in content: "…"
JavaScript\u{1D400}ES2015+
JavaScript\uD835\uDC00surrogate pair
JSON\uD835\uDC00
Python\U0001D400
Python\N{MATHEMATICAL BOLD CAPITAL A}by name
Java / C#\uD835\uDC00
C / C++\U0001D400universal character name
Rust / Swift / PHP\u{1D400}
Go\U0001D400
Ruby\u{1D400}
Excel / Sheets=UNICHAR(119808)
URL-encoded%F0%9D%90%80percent-encoded UTF-8
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Normalization forms

Normalizer β†’
NFCunchanged
NFDunchanged
NFKCU+0041 A
NFKDU+0041 A
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Looks similar

Characters that Unicode’s security data (UTS #39 confusables) lists as visually confusable with this one. Useful for spotting lookalike spoofing in URLs and usernames.

U+0041ALatin Capital Letter A U+0391Ξ‘Greek Capital Letter Alpha U+0410АCyrillic Capital Letter A U+FF21οΌ‘Fullwidth Latin Capital Letter A U+1D434𝐴Mathematical Italic Capital A U+1D468𝑨Mathematical Bold Italic Capital A U+1D49Cπ’œMathematical Script Capital A U+1D4D0𝓐Mathematical Bold Script Capital A U+1D504𝔄Mathematical Fraktur Capital A U+1D538𝔸Mathematical Double-Struck Capital A U+1D56C𝕬Mathematical Bold Fraktur Capital A U+1D5A0𝖠Mathematical Sans-Serif Capital A U+1D5D4𝗔Mathematical Sans-Serif Bold Capital A U+1D608𝘈Mathematical Sans-Serif Italic Capital A U+1D63C𝘼Mathematical Sans-Serif Bold Italic Capital A U+1D670𝙰Mathematical Monospace Capital A
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Nearby in Mathematical Alphanumeric Symbols

All in block β†’
U+1D401𝐁Mathematical Bold Capital B U+1D402𝐂Mathematical Bold Capital C U+1D403𝐃Mathematical Bold Capital D U+1D404𝐄Mathematical Bold Capital E U+1D405𝐅Mathematical Bold Capital F U+1D406𝐆Mathematical Bold Capital G