UnicodeCharactercom
ℝ
U+211D · DOUBLE-STRUCK CAPITAL R

Double-Struck Capital R

  • CodepointU+211D
  • NameDOUBLE-STRUCK CAPITAL R
  • Decimal8477
  • BlockLetterlike Symbols (U+2100–U+214F)
  • Plane0 — Basic Multilingual Plane
  • ScriptCommon
  • CategoryLu — Uppercase Letter
  • Unicode version1.1 (1993)
  • Bidi classL — Left-to-Right
  • Combining class0
  • East Asian widthN — Neutral
  • MirroredNo

About this character

U+211D (ℝ) is DOUBLE-STRUCK CAPITAL R, an uppercase 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 1.1 (1993).

It is a font variant of U+0052 R (compatibility decomposition <font>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+0052 R. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

How to type ℝ

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Encodings & escapes

UTF-8 encoder →
UTF-8E2 84 9D3 bytes
UTF-16211D1 code unit
UTF-320000211D4 bytes
HTML named&Ropf;named character reference
HTML named&reals;named character reference
HTML decimal&#8477;
HTML hex&#x211D;
CSS\211Din content: "…"
JavaScript\u211D
JSON\u211D
Python\u211D
Python\N{DOUBLE-STRUCK CAPITAL R}by name
Java / C#\u211D
C / C++\u211Duniversal character name
Rust / Swift / PHP\u{211D}
Go\u211D
Ruby\u211D
Excel / Sheets=UNICHAR(8477)
URL-encoded%E2%84%9Dpercent-encoded UTF-8
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Normalization forms

Normalizer →
NFCunchanged
NFDunchanged
NFKCU+0052 R
NFKDU+0052 R
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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+0052RLatin Capital Letter R U+01A6ƦLatin Letter Yr U+211BℛScript Capital R U+211CℜBlack-Letter Capital R U+1D411𝐑Mathematical Bold Capital R U+1D445𝑅Mathematical Italic Capital R U+1D479𝑹Mathematical Bold Italic Capital R U+1D4E1𝓡Mathematical Bold Script Capital R U+1D57D𝕽Mathematical Bold Fraktur Capital R U+1D5B1𝖱Mathematical Sans-Serif Capital R U+1D5E5𝗥Mathematical Sans-Serif Bold Capital R U+1D619𝘙Mathematical Sans-Serif Italic Capital R U+1D64D𝙍Mathematical Sans-Serif Bold Italic Capital R U+1D681𝚁Mathematical Monospace Capital R U+13A1ᎡCherokee Letter E U+13D2ᏒCherokee Letter Sv
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Nearby in Letterlike Symbols

All in block →
U+2117℗Sound Recording Copyright U+2118℘Script Capital P U+2119ℙDouble-Struck Capital P U+211AℚDouble-Struck Capital Q U+211BℛScript Capital R U+211CℜBlack-Letter Capital R U+211E℞Prescription Take U+211F℟Response U+2120℠Service Mark U+2121℡Telephone Sign U+2122™Trade Mark Sign U+2123℣Versicle