ℝ
Technical information
| Symbol | ℝ | |
| Name | Double-struck capital r | |
| Unicode number | U+211D | |
| Category | Double-struck symbols | |
| Description | The Unicode character ℝ, or U+211D, is known as the "Double-Struck Capital R". It belongs to the "Letterlike Symbols" block and falls under the "Letter, Uppercase" category in the Unicode standard. In mathematics, the double-struck capital R is often used to represent the set of all real numbers. The character looks like a capital "R", but is typically more stylized or bold to distinguish it from the regular capital "R". Its exact rendering can depend on the typeface and platform. |
Encoding
| HTML Entity | ℝ | |
| HTML Entity (hex) | ℝ | |
| HTML Entity (named) | ℝ | |
| URL Escape Code | %E2%84%9D | |
| UTF-8 (hex) | 0xE2 0x84 0x9D | |
| UTF-8 (binary) | 11100010:10000100:10011101 | |
| UTF-16 | 0x211D | |
| UTF-32 | 0x0000211D |
Source Code
| C, C++, and Java | "\u211D" | |
| CSS Code | \211D | |
| JavaScript | "\u211D" | |
| Perl | \x{211D} | |
| Python 2 | u"\u211D" | |
| Python 3 | \u211D | |
| Ruby | \u{211D} |
Preview
This Unicode character looks like this ℝ in sentence and in bold like this ℝ and in italic like this ℝ.
input-group
Font size:
ℝ
12px
ℝ
16px
ℝ
20px
ℝ
28px
ℝ
36px
ℝ
48px
ℝ
72px
CSS Property: font-weight
ℝ
100
ℝ
200
ℝ
300
ℝ
400
ℝ
500
ℝ
600
ℝ
700
ℝ
800
ℝ
900
HTML Forms and Input
input
disabled input
ℝ
select
button
button
Code examples in HTML and CSS
<span>ℝ</span>
span {
content: "\211D";
}The symbol in different fonts
ℝ
-apple-system
ℝ
Apple Color Emoji
ℝ
Arial
ℝ
BlinkMacSystemFont
ℝ
Courier New
ℝ
Georgia
ℝ
Droid Sans
ℝ
Helvetica
ℝ
Noto Sans
ℝ
Oxygen
ℝ
Roboto
ℝ
"Segoe UI"
ℝ
sans-serif
ℝ
Segoe UI Emoji
ℝ
Segoe UI Symbol
ℝ
system-ui
ℝ
Times New Roman
ℝ
Ubuntu
ℝ
Verdana