UnicodeCharactercom
𝕓
U+1D553 Β· MATHEMATICAL DOUBLE-STRUCK SMALL B

Mathematical Double-Struck Small B

  • CodepointU+1D553
  • NameMATHEMATICAL DOUBLE-STRUCK SMALL B
  • Decimal120147
  • BlockMathematical Alphanumeric Symbols (U+1D400–U+1D7FF)
  • Plane1 β€” Supplementary Multilingual Plane
  • ScriptCommon
  • CategoryLl β€” Lowercase Letter
  • Unicode version3.1 (2001)
  • Bidi classL β€” Left-to-Right
  • Combining class0
  • East Asian widthN β€” Neutral
  • MirroredNo

About this character

U+1D553 (𝕓) is MATHEMATICAL DOUBLE-STRUCK SMALL B, a lowercase 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+0062 b (compatibility decomposition <font>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+0062 b. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

How to type 𝕓

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Encodings & escapes

UTF-8 encoder β†’
UTF-8F0 9D 95 934 bytes
UTF-16D835 DD53surrogate pair
UTF-320001D5534 bytes
HTML named&bopf;named character reference
HTML decimal&#120147;
HTML hex&#x1D553;
CSS\1D553in content: "…"
JavaScript\u{1D553}ES2015+
JavaScript\uD835\uDD53surrogate pair
JSON\uD835\uDD53
Python\U0001D553
Python\N{MATHEMATICAL DOUBLE-STRUCK SMALL B}by name
Java / C#\uD835\uDD53
C / C++\U0001D553universal character name
Rust / Swift / PHP\u{1D553}
Go\U0001D553
Ruby\u{1D553}
Excel / Sheets=UNICHAR(120147)
URL-encoded%F0%9D%95%93percent-encoded UTF-8
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Normalization forms

Normalizer β†’
NFCunchanged
NFDunchanged
NFKCU+0062 b
NFKDU+0062 b
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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+0062bLatin Small Letter B U+0184Ζ„Latin Capital Letter Tone Six U+042CΠ¬Cyrillic Capital Letter Soft Sign U+1D41B𝐛Mathematical Bold Small B U+1D44F𝑏Mathematical Italic Small B U+1D483𝒃Mathematical Bold Italic Small B U+1D4B7𝒷Mathematical Script Small B U+1D4EB𝓫Mathematical Bold Script Small B U+1D51Fπ”ŸMathematical Fraktur Small B U+1D587𝖇Mathematical Bold Fraktur Small B U+1D5BB𝖻Mathematical Sans-Serif Small B U+1D5EF𝗯Mathematical Sans-Serif Bold Small B U+1D623𝘣Mathematical Sans-Serif Italic Small B U+1D657𝙗Mathematical Sans-Serif Bold Italic Small B U+1D68Bπš‹Mathematical Monospace Small B U+13CFᏏCherokee Letter Si
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Nearby in Mathematical Alphanumeric Symbols

All in block β†’
U+1D54D𝕍Mathematical Double-Struck Capital V U+1D54Eπ•ŽMathematical Double-Struck Capital W U+1D54F𝕏Mathematical Double-Struck Capital X U+1D550𝕐Mathematical Double-Struck Capital Y U+1D552𝕒Mathematical Double-Struck Small A U+1D554𝕔Mathematical Double-Struck Small C U+1D555𝕕Mathematical Double-Struck Small D U+1D556𝕖Mathematical Double-Struck Small E U+1D557𝕗Mathematical Double-Struck Small F U+1D558π•˜Mathematical Double-Struck Small G U+1D559𝕙Mathematical Double-Struck Small H