Sigma Symbol Σ Copy & Paste
Copy the sigma symbol Σ σ ∑ instantly. Includes Greek capital and small sigma, final sigma ς, and summation symbol. HTML entities (Σ) and Unicode for math and statistics.
All Variations
Symbol Details
| Symbol | Name | Unicode | HTML |
|---|---|---|---|
| Σ | Greek Capital Letter Sigma | U+03A3 | Σ |
| σ | Greek Small Letter Sigma | U+03C3 | σ |
| ς | Greek Small Letter Final Sigma | U+03C2 | — |
| ∑ | N-Ary Summation | U+2211 | ∑ |
Usage
Sigma is used in mathematics for summation notation (∑), statistics for standard deviation (σ), the Greek alphabet, engineering formulas, internet culture ('sigma male' slang), and Six Sigma quality methodology.
How to Type
| Platform | Method / Code |
|---|---|
| Windows | In Word, type 03A3 then Alt+X for Σ, or 03C3 then Alt+X for σ. For the summation ∑, type 2211 then Alt+X. Use Insert > Symbol for a visual picker. |
| Mac / iOS | Press Option+W for ∑. For Greek letters Σ and σ, use the Character Viewer (Control+Command+Space) and search 'sigma'. |
| HTML Entity | Use Σ or Σ for Σ. Use σ or σ for σ. For summation ∑, use ∑ or ∑. |
| Unicode | U+03A3 (Capital Sigma Σ), U+03C3 (Small Sigma σ), U+03C2 (Final Sigma ς), U+2211 (Summation ∑). |
Platform Compatibility
This symbol renders correctly on all listed platforms.
Frequently Asked Questions
How do I type the sigma symbol?
On Windows, type 03A3 then Alt+X in Word for Σ. On Mac, press Option+W for the summation symbol ∑. For Greek sigma Σ/σ, use the Character Viewer. You can also copy Σ or σ directly from this page.
What is the difference between Σ and ∑?
Σ (U+03A3) is the Greek capital letter sigma used in the Greek alphabet. ∑ (U+2211) is the mathematical summation operator. While they look very similar, they are different Unicode characters with different semantic meanings. Use Σ for Greek text and ∑ for mathematical formulas.
What is the final sigma ς?
The final sigma ς (U+03C2) is a variant of the lowercase sigma used only at the end of Greek words. In the middle of words, the standard σ (U+03C3) is used. For example: θάλασσας uses both σ (middle) and ς (final).
What is the HTML code for the sigma symbol?
Use Σ or Σ for capital Σ. Use σ or σ for lowercase σ. For the summation operator ∑, use ∑ or ∑.