UnicodeCharactercom
𝙄
U+1D644 Β· MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL I

Mathematical Sans-Serif Bold Italic Capital I

  • CodepointU+1D644
  • NameMATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL I
  • Decimal120388
  • 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+1D644 (𝙄) is MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL I, 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+0049 I (compatibility decomposition <font>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+0049 I. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

How to type 𝙄

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Encodings & escapes

UTF-8 encoder β†’
UTF-8F0 9D 99 844 bytes
UTF-16D835 DE44surrogate pair
UTF-320001D6444 bytes
HTML decimal&#120388;
HTML hex&#x1D644;
CSS\1D644in content: "…"
JavaScript\u{1D644}ES2015+
JavaScript\uD835\uDE44surrogate pair
JSON\uD835\uDE44
Python\U0001D644
Python\N{MATHEMATICAL SANS-SERIF BOLD ITALIC CAPITAL I}by name
Java / C#\uD835\uDE44
C / C++\U0001D644universal character name
Rust / Swift / PHP\u{1D644}
Go\U0001D644
Ruby\u{1D644}
Excel / Sheets=UNICHAR(120388)
URL-encoded%F0%9D%99%84percent-encoded UTF-8
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Normalization forms

Normalizer β†’
NFCunchanged
NFDunchanged
NFKCU+0049 I
NFKDU+0049 I
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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+00311Digit One U+0049ILatin Capital Letter I U+006ClLatin Small Letter L U+007C|Vertical Line U+0196Ζ–Latin Capital Letter Iota U+01C0Η€Latin Letter Dental Click U+0399Ξ™Greek Capital Letter Iota U+0406Π†Cyrillic Capital Letter Byelorussian-Ukrainian I U+04C0Σ€Cyrillic Letter Palochka U+05C0Χ€Hebrew Punctuation Paseq U+05D5Χ•Hebrew Letter Vav U+05DFןHebrew Letter Final Nun U+0627Ψ§Arabic Letter Alef U+0661Ω‘Arabic-Indic Digit One U+06F1Ϋ±Extended Arabic-Indic Digit One U+16C1ᛁRunic Letter Isaz Is Iss I
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Nearby in Mathematical Alphanumeric Symbols

All in block β†’
U+1D63E𝘾Mathematical Sans-Serif Bold Italic Capital C U+1D63F𝘿Mathematical Sans-Serif Bold Italic Capital D U+1D640𝙀Mathematical Sans-Serif Bold Italic Capital E U+1D641𝙁Mathematical Sans-Serif Bold Italic Capital F U+1D642𝙂Mathematical Sans-Serif Bold Italic Capital G U+1D643𝙃Mathematical Sans-Serif Bold Italic Capital H U+1D645𝙅Mathematical Sans-Serif Bold Italic Capital J U+1D646𝙆Mathematical Sans-Serif Bold Italic Capital K U+1D647𝙇Mathematical Sans-Serif Bold Italic Capital L U+1D648π™ˆMathematical Sans-Serif Bold Italic Capital M U+1D649𝙉Mathematical Sans-Serif Bold Italic Capital N U+1D64Aπ™ŠMathematical Sans-Serif Bold Italic Capital O