Windows
2 options- In Word / Outlook: type 2211 then press Alt + X.
- Anywhere: press Win + . to open the emoji & symbol picker, then search.
N-Ary Summation Symbol
A symbol from the Math Symbols collection. Click the symbol or the button below to copy.
- Symbol
- ∑
- Unicode
- U+2211
- HTML entity
- ∑
- Category
- Math Symbols
Export
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Background
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16 of 96 in the math symbols collection
About the n-ary summation symbol
A bold, large summation sign used in mathematical notation to indicate the sum of a sequence of terms. It is typically positioned with an index variable written below and an upper limit above. This character is the standard operator for summation in algebra, calculus, and related fields, distinct from the Greek capital letter sigma it resembles.
How to type N-Ary Summation
Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.
macOS
2 options- Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 2211.
- Or: Control + Command + Space opens the Character Viewer — search by name.
Linux
1 step- Press Ctrl + Shift + U, type 2211, then press Enter or Space.
Copy in every format
Every form of this character — for HTML, CSS, JavaScript, URLs and more. Click any value to copy.
Related math symbols
Other math symbols you can copy and paste — explore similar Unicode characters from the same family.
- +Plus SignCopy the plus sign symbol→
- −Minus SignCopy the minus sign symbol→
- ×Multiplication SignCopy the multiplication sign symbol→
- ÷Division SignCopy the division sign symbol→
- ±Plus-Minus SignCopy the plus-minus sign symbol→
- ∓Minus-Or-Plus SignCopy the minus-or-plus sign symbol→
- =Equals SignCopy the equals sign symbol→
- ≠Not Equal ToCopy the not equal to symbol→
- ≈Almost Equal ToCopy the almost equal to symbol→
- ≡Identical ToCopy the identical to symbol→
- ≤Less-Than Or Equal ToCopy the less-than or equal to symbol→
- ≥Greater-Than Or Equal ToCopy the greater-than or equal to symbol→
Explore related collections
Browse other symbol families that pair well with math symbols.