Sigma Symbol Σ — Copy & Paste
Sigma (Σ) is the eighteenth Greek letter, used in statistics to denote standard deviation (lowercase σ) and as the summation operator (uppercase Σ). It is also used in the sigma notation for series in mathematics and in fraternity/sorority names.
Copy the sigma symbolΣ
U+03A3·Decimal 931
How to Type Sigma Symbol
⌘Mac
No macOS keystroke for the sigma symbol; use the sigma symbol card.⊞Windows
No Windows keystroke for the sigma symbol; use the sigma symbol card.📱iPhone / iOS
No iOS keystroke for the sigma symbol; use the sigma symbol card.</>HTML Code
ΣOn Android, reach the sigma symbol via the special-characters panel, or copy the sigma symbol (Σ) above.
Sigma Symbol — Unicode Details
Unicode
U+03A3Decimal
931Hex
03A3HTML
ΣWhere Is Sigma Symbol Used?
- ✦Statistics (standard deviation)
- ✦Summation notation
- ✦Six sigma quality
- ✦Fraternity names
Other Names for Σ
sigma signstandard deviation symbolGreek S
Frequently Asked Questions
Typing the sigma symbol on a Mac▼
The sigma symbol has no Mac keystroke, so grab the sigma symbol from this page.
Will the sigma symbol paste into social apps?▼
Yes — the sigma symbol is Unicode U+03A3, so the sigma symbol renders on all platforms.
HTML codes for the sigma symbol▼
Sigma Symbol entity: Σ; numeric Σ; hex Σ.