Greek Capital Letter Sigma
The greek capital letter sigma (Σ) sits at code point U+03A3 in Unicode. It belongs to the math family and pastes as plain text, so it keeps working across documents, messages and web pages. Below you can copy it in one click and grab the exact HTML, CSS and JavaScript codes you need to reproduce it anywhere.
| Symbol | Σ | |
|---|---|---|
| Unicode | U+03A3 | |
| Name | Greek Capital Letter Sigma | |
| HTML (named) | Σ | |
| HTML (decimal) | Σ | |
| HTML (hex) | Σ | |
| CSS content | \03A3 | |
| JavaScript / JSON | \u03A3 | |
| UTF-8 bytes | 0xCE 0xA3 | |
| UTF-16 units | 0x03A3 |
How do you type the greek capital letter sigma on each platform?
| Where | How to type it |
|---|---|
| Any device | Click the Σ at the top of this page. It goes straight to your clipboard, and you paste it with Ctrl+V on Windows or Cmd+V on a Mac. This is the only method that behaves identically everywhere. |
| Windows | There is no short alt code for this character. Press Win and the full stop key to open the emoji and symbol panel, then use the symbols tab and search for greek capital letter sigma. |
| macOS | Add Unicode Hex Input under Keyboard settings, switch to it, then hold Option and type 03A3. Without that input source, open the Character Viewer with Control+Command+Space and search for greek capital letter sigma. |
| Linux and ChromeOS | Press Ctrl+Shift+U, type 03a3, then press Enter or the space bar. This works in GTK applications and with IBus. |
| Microsoft Word | Type 03A3 in the document, then press Alt and X together with the cursor immediately after the last digit. Word replaces the digits with Σ. |
| Google Docs | Insert, then Special characters, then paste U+03A3 or type greek capital letter sigma in the search box. You can also draw the shape in the sketch pad on the right. |
| Excel and Google Sheets | Use the formula UNICHAR(931) in a cell. Copy the cell and paste it as a value if you want the character rather than the formula. |
| HTML | Write Σ, or the numeric reference Σ, or Σ. On a page served as UTF-8 the character itself also works. |
| CSS | Use content: "\03A3" inside a ::before or ::after rule. Terminate the escape with a space if the next character is also a hexadecimal digit. |
| JavaScript | The escape \u03A3 produces this character inside a string literal, and the same escape is valid in JSON. |
More detail per platform: Windows alt codes, special characters on a Mac, special characters in Word and HTML entities.
Frequently asked questions
How do I copy the greek capital letter sigma symbol?
Click the Σ above or the copy button and it is placed on your clipboard. Paste it anywhere with Ctrl+V or Cmd+V. It is a real text character, so it works in documents, chats and code.
What is the Unicode code point for greek capital letter sigma?
The greek capital letter sigma has the Unicode code point U+03A3. In HTML you can write it as Σ or Σ, or with the named entity Σ.
Can I use the greek capital letter sigma symbol in HTML and CSS?
Yes. In HTML write Σ or the named entity Σ, and in CSS use content: "\03A3" inside a ::before or ::after rule. The code table on this page has copy buttons for both.
Related symbols
Browse the full math symbols hub, or return to the searchable symbol grid.