Summation Symbol ∑ — Copy & Paste
The summation symbol ∑ (capital sigma) represents the operation of summing a series of values. It is a cornerstone of calculus, statistics, and machine learning notation. This character is the mathematical summation sign — distinct from the Greek letter Σ (sigma).
Copy the summation symbol∑
U+2211·Decimal 8721
How to Type Summation Symbol
⌘Mac
No macOS keystroke for the summation symbol; tap copy on the summation symbol.⊞Windows
No Windows keystroke for the summation symbol; tap copy on the summation symbol.📱iPhone / iOS
No iOS keystroke for the summation symbol; tap copy on the summation symbol.</>HTML Code
∑On Android, reach the summation symbol via the symbols keyboard, or copy the summation symbol (∑) above.
Summation Symbol — Unicode Details
Unicode
U+2211Decimal
8721Hex
2211HTML
∑Where Is Summation Symbol Used?
- ✦Calculus
- ✦Statistics
- ✦Machine learning
- ✦Series notation
Other Names for ∑
sigma summationsum symbolseries notation
Frequently Asked Questions
Typing the summation symbol on a Mac▼
The summation symbol has no Mac keystroke, so tap copy on the summation symbol above.
Will the summation symbol paste into social apps?▼
Yes — the summation symbol is Unicode U+2211, so the summation symbol survives every paste.
HTML codes for the summation symbol▼
Summation Symbol entity: ∑; numeric ∑; hex ∑.