UnicodeCharactercom
𝔽
U+1D53D Β· MATHEMATICAL DOUBLE-STRUCK CAPITAL F

Mathematical Double-Struck Capital F

  • CodepointU+1D53D
  • NameMATHEMATICAL DOUBLE-STRUCK CAPITAL F
  • Decimal120125
  • 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+1D53D (𝔽) is MATHEMATICAL DOUBLE-STRUCK CAPITAL F, 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+0046 F (compatibility decomposition <font>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+0046 F. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

How to type 𝔽

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Encodings & escapes

UTF-8 encoder β†’
UTF-8F0 9D 94 BD4 bytes
UTF-16D835 DD3Dsurrogate pair
UTF-320001D53D4 bytes
HTML named&Fopf;named character reference
HTML decimal&#120125;
HTML hex&#x1D53D;
CSS\1D53Din content: "…"
JavaScript\u{1D53D}ES2015+
JavaScript\uD835\uDD3Dsurrogate pair
JSON\uD835\uDD3D
Python\U0001D53D
Python\N{MATHEMATICAL DOUBLE-STRUCK CAPITAL F}by name
Java / C#\uD835\uDD3D
C / C++\U0001D53Duniversal character name
Rust / Swift / PHP\u{1D53D}
Go\U0001D53D
Ruby\u{1D53D}
Excel / Sheets=UNICHAR(120125)
URL-encoded%F0%9D%94%BDpercent-encoded UTF-8
Β§

Normalization forms

Normalizer β†’
NFCunchanged
NFDunchanged
NFKCU+0046 F
NFKDU+0046 F
Β§

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+0046FLatin Capital Letter F U+03DCϜGreek Letter Digamma U+2131β„±Script Capital F U+1D405𝐅Mathematical Bold Capital F U+1D439𝐹Mathematical Italic Capital F U+1D46D𝑭Mathematical Bold Italic Capital F U+1D4D5𝓕Mathematical Bold Script Capital F U+1D509𝔉Mathematical Fraktur Capital F U+1D571𝕱Mathematical Bold Fraktur Capital F U+1D5A5π–₯Mathematical Sans-Serif Capital F U+1D5D9𝗙Mathematical Sans-Serif Bold Capital F U+1D60D𝘍Mathematical Sans-Serif Italic Capital F U+1D641𝙁Mathematical Sans-Serif Bold Italic Capital F U+1D675𝙡Mathematical Monospace Capital F U+1D7CA𝟊Mathematical Bold Capital Digamma U+15B4α–΄Canadian Syllabics Blackfoot We
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Nearby in Mathematical Alphanumeric Symbols

All in block β†’
U+1D537𝔷Mathematical Fraktur Small Z U+1D538𝔸Mathematical Double-Struck Capital A U+1D539𝔹Mathematical Double-Struck Capital B U+1D53B𝔻Mathematical Double-Struck Capital D U+1D53C𝔼Mathematical Double-Struck Capital E U+1D53E𝔾Mathematical Double-Struck Capital G U+1D540𝕀Mathematical Double-Struck Capital I U+1D541𝕁Mathematical Double-Struck Capital J U+1D542𝕂Mathematical Double-Struck Capital K U+1D543𝕃Mathematical Double-Struck Capital L