Real Numbers symbol
Type :reals: · Math
What ℝ is for
Blackboard bold R, the set of all real numbers. The doubled strokes come from lecturers thickening a letter with chalk to mean bold, and the printed character copies the chalk rather than the other way round.
How to type ℝ
The shortcuts below are the built-in routes. With
Emoji Anywhere
installed you can skip all of them and type
:reals: in any text field instead, which
is the same on every platform.
macOS
No direct shortcut. Use Edit → Emoji & Symbols, or switch to the Unicode Hex
Input source and type 211D with Option
held.
Windows
No Alt code. In Word, type 211D then press Alt +
X. Elsewhere use the emoji panel with Win + Period, or Character Map.
Shortcodes
:reals: :real_numbers: On the web
HTML ℝ
Unicode U+211D
What ℝ gets mistaken for
capital R
A plain letter. In maths it usually means a specific variable, so using it for the set of reals is genuinely ambiguous rather than just informal.
More from math
:pm: × :times: ÷ :divide_symbol: ≈ :approx: ≠ :neq: ≡ :identical_to: ≤ :lte: ≥ :gte: ∞ :inf: √ :sqrt: ∑ :sum: ∏ :product_pi: Every symbol and kaomoji is in the full gallery .
Tired of copying ℝ from pages like this one?
That is exactly what the extension removes. Here is the whole interaction, in every text field you already use:
You type
You get
Your keyboard already knows what you mean
Free, 290 KB, no account. Two letters from now you will never open an emoji panel again.