U+211D "ℝ" Double-Struck Capital R Unicode Character
Unicode Version 18.0
Source: Browser Default
U+211D "ℝ" Double-Struck Capital R is a typographic symbol representing the set of real numbers in mathematical notation, originating from blackboard bold typeface conventions used to denote number systems. It is part of the Letterlike Symbols block and is commonly employed in algebra, calculus, and analysis to signify the continuum of all rational and irrational numbers. This character allows for clear, unambiguous communication in mathematical texts, academic papers, and digital formats without relying on formatting tricks like bolding.
General Properties
Code Point
U+211D
Name
Double-Struck Capital R
Unicode 1.0 Name
Double-Struck R
Decomposition Mapping
Encodings
HTML Decimal Encoding
ℝ
HTML Hex Encoding
ℝ
UTF-8 Encoding
0xE2 0x84 0x9D
UTF-16 Encoding
0x211D
UTF-32 Encoding
0x0000211D
C/C++/Java Escape
\u211d
Unicode Properties
Numeric Value
NaN
NFKC Casefold
NFKC Simple Casefold
Script Extensions
Common