∑

Summation Symbol ∑

∑ is N-ARY SUMMATION (U+2211) in the Mathematical Operators block.

U+2211 · N-ARY SUMMATION

How to type ∑

Word (Windows)2211 → Alt + XType the code, then press Alt + X.
MacOption + WU.S. keyboard layout.
iPhone / AndroidCopy it from this page and paste. Most phone keyboards do not have it.

∑ Unicode and HTML codes

Unicode nameN-ARY SUMMATION
Code pointU+2211
Unicode blockMathematical Operators
HTML entity∑
HTML numeric∑
CSScontent: "\2211";
JavaScript"\u2211"
Python"\u2211" · "\N{N-ARY SUMMATION}"
UTF-8 bytesE2 88 91

Related symbols: Math

×Multiplication Sign
÷Division Sign
≠Not Equal To
≈Almost Equal To
≡Identical To
≤Less-Than or Equal To
≥Greater-Than or Equal To
±Plus-Minus Sign
∞Infinity
√Square Root
∫Integral
∂Partial Differential
∆Increment (Delta)
∇Nabla
∈Element Of
∉Not an Element Of
⊂Subset Of
∪Union
∩Intersection
∧Logical And
∨Logical Or
¬Not Sign
∀For All
∃There Exists

FAQ

How do I type ∑ on Windows?

There is no Alt code for it. In Word, type 2211 and press Alt+X, or copy it from this page.

How do I type ∑ on a Mac?

Press Option + W on the U.S. keyboard layout.

What is the HTML code for ∑?

∑ or ∑. In CSS use content: "\2211".

The exact look of a symbol depends on the font and device.