Black-Letter Capital R HTML entity &real;

&real; is the HTML entity for Black-Letter Capital R ℜ (U+211C). Copy ℜ, ℜ and the CSS, JavaScript, Python and URL escapes.

Entity: &real;
Also written: &Re; &realpart; &Rfr;
Code point: U+211C
Unicode name: BLACK-LETTER CAPITAL R
Block: Letterlike Symbols
Category: Uppercase letter (Lu)
Since: Unicode 1.1
Defined in: HTML 4.01 and HTML5

Codes to copy

HTML named	`&real;`Works in HTML; in XML only & < > " ' are predefined.
HTML decimal	`ℜ`Works in HTML and XML.
HTML hex	`ℜ`Works in HTML and XML.
CSS	`content: "\211C";`In a stylesheet, for ::before and ::after.
JavaScript	`"\u211C"`Also valid in JSON.
Python	`"\u211c"`Python 3 string literal.
Python by name	`"\N{BLACK-LETTER CAPITAL R}"`Readable alternative using the Unicode name.
URL	`%E2%84%9C`Percent-encoded UTF-8 bytes, for a path or query value.
UTF-8 bytes	`E2 84 9C`3 bytes.
UTF-16	`211C`1 code unit, which is what JavaScript length counts.

When to use it

&real; writes U+211C (Black-Letter Capital R), a capital letter from the Unicode Letterlike Symbols block, encoded since Unicode 1.1. These characters exist mostly for compatibility with older character sets; for anything beyond simple cases, <sup>, <sub> or MathML give more control.

The name dates from HTML 4, so it works in every browser and in old email clients.

More letterlike symbols, numbers and fractions

All letterlike symbols, numbers and fractions · Every HTML entity · Encode or decode text

Source: the WHATWG HTML Standard list of named character references and the Unicode Character Database (Unicode 18.0).