Greek Capital Letter Sigma
Part of Greek Letters
On Windows, hold Alt and type 228 on the numeric keypad to insert greek capital letter sigma.
- Alt code
- Alt+228
- HTML entity
- Σ
- Unicode
- U+03A3
About this symbol
Sigma comes from the Phoenician letter shin. The small letter has two forms: σ inside a word and ς at the end of one, as in the Greek word σοφός, wise. A third, rounded form, the lunate sigma ϲ, shaped like a C, was common in late ancient writing.
In maths the capital Σ means “add these up”; Unicode gives that use its own character, ∑.
Unicode facts
- Official name
- GREEK CAPITAL LETTER SIGMA
- Type
- Uppercase letter
- Unicode block
- Greek and Coptic
- Unicode group
- Letters
- Added in
- Unicode 1.1 (1993)
Click the symbol or any value at the top of the page to copy it. See the full Greek Letters chart for related characters.