β
Upwards Two Headed Arrow Symbol (β)
Copy the Upwards Two Headed Arrow symbol β to your clipboard, and see its Unicode code point, HTML entity, LaTeX command and how to type it on any device.
What does β mean?
The upwards two headed arrow (β) is an arrow character from the Unicode Arrows block that points upwards. A two-headed arrow conventionally denotes a surjective (onto) map in mathematics.
Codes and properties
| Character | β |
|---|---|
| Unicode name | UPWARDS TWO HEADED ARROW |
| Code point | U+219F |
| Decimal | 8607 |
| Unicode block | Arrows |
| HTML entity | ↟ Β· ↟ |
| CSS | \219F |
| JavaScript / JSON | \u219F |
| Python | \u219F or \N{UPWARDS TWO HEADED ARROW} |
| UTF-8 bytes | E2 86 9F |
| LaTeX | paste β with unicode-math (XeLaTeX/LuaLaTeX) |
How to type β
- Copy & paste: press the Copy button above, then paste β anywhere β Word, Google Docs, email, chat or code.
- Windows (Word, WordPad, Outlook): type
219Fthen press Alt+X. In any app, Win+. opens the symbol panel. - Mac: switch to the Unicode Hex Input keyboard, hold Option and type
219F; or press Ctrl+Cmd+Space and search βupwards two headed arrowβ. - Linux (GTK/IBus): press Ctrl+Shift+U, type
219f, then Space. - HTML:
↟renders as β. - LaTeX: standard LaTeX has no dedicated command; compile with XeLaTeX or LuaLaTeX and the unicode-math package, then paste β directly.
Frequently asked questions
How do I type β on Windows?
In Microsoft Word type 219F and press Alt+X. In any app press Win+. to open the symbol panel, or copy β from this page.
What is the HTML code for β?
Use ↟ (hex) or ↟ (decimal).
What is the LaTeX command for β?
There is no standard command; use XeLaTeX or LuaLaTeX with unicode-math and paste β directly.