Summation symbol ∑
The summation sign (capital sigma) for adding up a series of terms.
∑
- Symbol
- Unicode
- HTML entity
- HTML code
- CSS
- Mac shortcut
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Related symbols
How to type the summation symbol
How do I type the summation symbol?
The easiest way is to copy it from this page and paste it. On a Mac, press Option+W. On iPhone and Android, copy it here and paste, or add it as a keyboard text replacement.
How do I insert the summation symbol in Word?
Type 2211 and then press Alt+X, and Word turns it into ∑. You can also use Insert, Symbol.
What is the HTML code for the summation symbol?
Use ∑ or ∑ in HTML, or \2211 in CSS content.