Copy the Symbol
The symbol Ø (or its lowercase variant ø) is primarily used in technical and engineering drawings to denote the diameter of circular objects such as holes, pipes, or shafts. So it's not a mathematical average of numbers, but a geometric diameter of a circle.
However, if we're talking about the mathematical average of numbers (including grade average), there is no single definitive symbol for it. In mathematics, x with a bar above it x̅ is often used, which denotes the arithmetic mean (average value) of a set of numbers.
There are two variants of this character:
- Large Ø - used in official technical drawings and documentation
- Small ø - more common in informal communication and texts
Depending on your operating system, use one of the following methods:
- Windows: Press Alt + 0216 (Ø) or Alt + 0248 (ø) on the numeric keypad
- macOS: Press Option + Shift + O for Ø
- macOS: Press Option + O for ø
- Linux: Press Ctrl + Shift + U, type 00D8 (Ø) or 00F8 (ø) and press Enter
On mobile devices, typing the Ø character is easier:
- iOS (iPhone/iPad): Hold the O key and select Ø or ø from the menu
- Android: Hold the O key and select Ø or ø from the menu
In office applications, you can use these methods:
- Microsoft Word: Insert → Symbol → Ø or use the keyboard shortcut as on Windows
- Google Docs: Insert → Special characters → search for "O with stroke"
- Excel: Same as Word, or use function =CHAR(216) for Ø or =CHAR(248) for ø
For web developers and technical documentation authors:
You can directly insert the Ø character into HTML code:
<span>Průměr: Ø</span>Use an HTML entity:
<span>Průměr: Ø</span>Displays as: Průměr: Ø
Or use numeric code:
<span>Průměr: Ø</span>Displays as: Průměr: Ø
In Markdown, just type the character directly:
Průměr: ØIn most Markdown editors, you can use the Ø character directly without special modifications.
While the Ø symbol is primarily a technical symbol for denoting object diameter, it's often incorrectly used for mathematical average as well. Regardless of the use, you now know how to type this character on any device or in any program.