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Aug 08, 2026
HTML Entity Detail
HTML Entity - Real Numbers
Real Numbers is a letterlike mathematical symbols representing number sets and special functions. This HTML entity enables web developers to display this character reliably across all browsers without encoding issues.
Symbol preview
ℝ
Unicode
U+211D
HTML entity
ℝ
CSS code
\211D
Usage Examples
Use this HTML entity in mathematical notation for number sets like ℝ (real numbers) and ℕ (natural numbers), and physics constants.
Related Entities
Common Mistakes
⚠️
Mistake: Using R instead of ℝ for real numbers
Fix: Use ℝ (ℝ) for the set of real numbers. Plain R can be confused with other meanings. The double-struck ℝ is the standard mathematical symbol.
⚠️
Mistake: Confusing ℝ (real numbers) with ℜ (real part operator)
Fix: ℝ is the set of all real numbers. ℜ (ℜ) denotes the real part of a complex number: ℜ(z).
Real Numbers
Select any code to highlight it before copying.
Category: Letterlike Symbols
| Unicode | U+211D |
|---|---|
| Hex Code | ℝ |
| HTML Code | ℝ |
| HTML Entity | ℝ |
| CSS Code | \211D |
| Windows Shortcut | |
| Mac Shortcut | |
HTML code example
CSS code example
Last updated: 17 Aug 2026
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