Summation sign

Meaning and uses

The summation sign, a large Greek sigma. In maths it means add up a series of values, and it is a different character from the Greek letter Σ.

Unicode details

∑ is the Unicode character named N-ARY SUMMATION, code point U+2211, in the Mathematical Operators block. It was added in Unicode 1.1 in 1993, and Unicode classes it as a maths symbol (general category Sm).

It is not an emoji, so it keeps the colour and size of the text around it.

Tap a code to copy it:

How to type ∑

• On any device, tap the copy button above, then paste with a long press on a phone, Ctrl+V on Windows or Cmd+V on a Mac.
• In Microsoft Word on Windows, type 2211 and then press Alt+X to turn the code into ∑.
• On a Mac, press Control+Cmd+Space to open the Character Viewer, then search for “n-ary summation”.
• On Linux, most desktops accept Ctrl+Shift+U, then 2211, then Space or Enter.
• In HTML, use ∑ or ∑. In a CSS content property, use "\2211".