Copy and paste the xi symbol ξ — click the button or any variant below
Xi Symbol Copy and Paste
Click any symbol below to copy it to your clipboard instantly.
ξXiCopied!
ΞCapital XiCopied!
Unicode Character
ξ
Unicode Hex
U+03BE
HTML Entity
ξ
Decimal Code
958
Capital Letter
Ξ U+039E
About the Xi Symbol
Last reviewed on October 1, 2026
Xi is the fourteenth letter of the Greek alphabet and one of the few whose capital, Ξ, does not resemble any Latin letter.
Where ξ is used
Random variables and dummy integration variables ξ in probability and analysis.
The Xi baryon Ξ in particle physics.
Correlation length ξ in statistical mechanics, and the damping ratio in some textbooks.
Related characters
Browse the full Greek Letters list, or pick a sibling character from the grid below.
How to Type the Xi Symbol
Windows: Type 03BE then press Alt+X in Word for lowercase ξ, or 039E then Alt+X for capital Ξ. There is no classic Alt code for xi
Mac: Switch to the Greek keyboard layout (System Settings → Keyboard → Input Sources), or press Ctrl+Cmd+Space and search for “xi”
Microsoft Word: Type 03BE then press Alt+X to convert it into ξ
LaTeX:\xi in math mode
HTML: Use the entity ξ or the numeric code ξ
Phone & tablet: Copying ξ from this page is fastest — see our mobile typing guide for keyboard tricks
Xi Symbol Code for HTML, CSS & JavaScript
HTML: ξ
CSS: content: '\03BE';
JavaScript: '\u03BE'
Unicode: U+03BE
Frequently Asked Questions
How do I type the xi symbol ξ on Windows?
Type 03BE then press Alt+X in Word for lowercase ξ, or 039E then Alt+X for capital Ξ. There is no classic Alt code for xi. You can also copy ξ straight from this page — it pastes into any app.
How do I type ξ on a Mac?
Switch to the Greek keyboard layout (System Settings → Keyboard → Input Sources), or press Ctrl+Cmd+Space and search for “xi”.
What is the Unicode and HTML code for the xi symbol?
The xi symbol is Unicode code point U+03BE. In HTML, use ξ or the numeric reference ξ.