Copy it, then paste with Ctrl + V (Cmd + V on Mac).
Quick answer
| Method | How |
|---|---|
| Copy and paste | Use the copy button above |
| Windows | Alt + 228 |
| Mac | Ctrl + Cmd + Space (Character Viewer) |
| Microsoft Word | Type 03A3, then press Alt + X |
| Chromebook and Linux | Ctrl + Shift + U, type 03A3, press Enter |
| HTML | Σ or Σ |
| CSS | \03A3 |
| JavaScript | \u03A3 |
| Unicode | U+03A3 (Greek Capital Letter Sigma) |
How to type the Capital Greek Sigma on Windows
Hold Alt and type 228 on the numeric keypad, then release Alt.
No numeric keypad? On a laptop, use Win + . or open Character Map (search for charmap in Start).
In Microsoft Word, type 03A3 and then press Alt + X to turn the code into Σ.
How to type the Capital Greek Sigma on a Mac
Press Ctrl + Cmd + Space to open the Character Viewer, search for the name and double-click it.
On a Chromebook or Linux
Press Ctrl + Shift + U, type 03a3, then press Enter or Space.
On iPhone and Android
Switch to the symbols keyboard (123 then #+= on iPhone, ?123 then =\< on Android). If it is not there, copy it from this page.
In Google Docs
Go to Insert > Special characters and search for "capital greek sigma".
Don't confuse it with
∑ (summation sign).
About this character
The capital Greek letter sigma, widely used in math, science and engineering.
Related characters
Frequently asked questions
What is the Alt code for Σ?
On Windows, hold Alt and type 228 on the numeric keypad.
How do I type Σ on a Mac?
Open the Character Viewer with Ctrl + Cmd + Space and search for it.
What is the HTML code for Σ?
Use Σ or Σ in HTML.