UnicodeCharactercom
ⅆ
U+2146 · DOUBLE-STRUCK ITALIC SMALL D

Double-Struck Italic Small D

  • CodepointU+2146
  • NameDOUBLE-STRUCK ITALIC SMALL D
  • Decimal8518
  • BlockLetterlike Symbols (U+2100–U+214F)
  • Plane0 — Basic Multilingual Plane
  • ScriptCommon
  • CategoryLl — Lowercase Letter
  • Unicode version3.2 (2002)
  • Bidi classL — Left-to-Right
  • Combining class0
  • East Asian widthN — Neutral
  • MirroredNo

About this character

U+2146 (ⅆ) is DOUBLE-STRUCK ITALIC SMALL D, a lowercase letter in the Letterlike Symbols block. Its script is Common: it is shared by many writing systems rather than belonging to one. It was added in Unicode 3.2 (2002).

It is a font variant of U+0064 d (compatibility decomposition <font>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+0064 d. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

How to type ⅆ

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Encodings & escapes

UTF-8 encoder →
UTF-8E2 85 863 bytes
UTF-1621461 code unit
UTF-32000021464 bytes
HTML named&dd;named character reference
HTML named&DifferentialD;named character reference
HTML decimal&#8518;
HTML hex&#x2146;
CSS\2146in content: "…"
JavaScript\u2146
JSON\u2146
Python\u2146
Python\N{DOUBLE-STRUCK ITALIC SMALL D}by name
Java / C#\u2146
C / C++\u2146universal character name
Rust / Swift / PHP\u{2146}
Go\u2146
Ruby\u2146
Excel / Sheets=UNICHAR(8518)
URL-encoded%E2%85%86percent-encoded UTF-8
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Normalization forms

Normalizer →
NFCunchanged
NFDunchanged
NFKCU+0064 d
NFKDU+0064 d
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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+0064dLatin Small Letter D U+0501ԁCyrillic Small Letter Komi De U+217EⅾSmall Roman Numeral Five Hundred U+1D41D𝐝Mathematical Bold Small D U+1D451𝑑Mathematical Italic Small D U+1D485𝒅Mathematical Bold Italic Small D U+1D4B9𝒹Mathematical Script Small D U+1D4ED𝓭Mathematical Bold Script Small D U+1D521𝔡Mathematical Fraktur Small D U+1D555𝕕Mathematical Double-Struck Small D U+1D589𝖉Mathematical Bold Fraktur Small D U+1D5BD𝖽Mathematical Sans-Serif Small D U+1D5F1𝗱Mathematical Sans-Serif Bold Small D U+1D625𝘥Mathematical Sans-Serif Italic Small D U+1D659𝙙Mathematical Sans-Serif Bold Italic Small D U+1D68D𝚍Mathematical Monospace Small D
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Nearby in Letterlike Symbols

All in block →
U+2140⅀Double-Struck N-Ary Summation U+2141⅁Turned Sans-Serif Capital G U+2142⅂Turned Sans-Serif Capital L U+2143⅃Reversed Sans-Serif Capital L U+2144⅄Turned Sans-Serif Capital Y U+2145ⅅDouble-Struck Italic Capital D U+2147ⅇDouble-Struck Italic Small E U+2148ⅈDouble-Struck Italic Small I U+2149ⅉDouble-Struck Italic Small J U+214A⅊Property Line U+214B⅋Turned Ampersand U+214C⅌Per Sign