⌀ | 5 Ways To Type Diameter Symbol Text on Keyboard

The diameter symbol, represented by the character Ø, is commonly used in mathematics, engineering, and science to indicate the diameter of a circle or the width of a cylindrical object. It is also used to represent the empty set in set theory and mathematical logic.

This symbol may also mean different things in areas other than mathematics. In music, it marks specific details of the composition in musical scores; in photography, it indicates the size of a photograph in millimeters; and it serves to mark a tacit or elliptical object in linguistics.  

In this guide, we are going to show you five unique ways to obtain the diameter symbol with ease.

Copy the Diameter Symbol Text

The easiest way to get the Diameter Symbol text is to copy and paste it wherever you need it.

Save yourself some time with the copy button above.

Once it is copied, switch over to where you need it and press Ctrl and V on your keyboard to paste it there.

Diameter Symbol Information Table

The table below contains some useful information about the diameter Symbol.

CATEGORYMathematical Symbol
MEANINGDenote a null set, and diameter
SHORTCUT (MAC)Option + Shift + O
MS WORD2300, Alt + X
HTML&#8960 or &#x2300
LATEX\emptyset or \varnothing

As much as possible, the above table has done a great deal in presenting some useful information about the Diameter Symbol, including keyboard shortcuts for both Windows and Mac.

The remaining section will explain this table further.

How to Get the Diameter Symbol

Even though there’s no dedicated key for the diameter symbol on the keyboard, you can still get this symbol using the keyboard for both Windows and Mac.

If you are also using any of the Microsoft Office apps, there are quick navigations you can perform to insert this symbol in Word, Excel, PowerPoint, or Google Docs.

Without any further ado, below are the various ways to get this symbol whether with your keyboard or using the MS Office navigation.

The Symbol for Diameter Alt Code (Keyboard Shortcut)

The Diameter Symbol Alt Code shortcut is Alt + 0216 for Windows.

You can use the Alt code method to type this symbol by pressing and holding the Alt key while typing the Symbol Alt code (0216) using the numeric keypad on the right.

Below are detailed steps you may use to type the Symbol for Diameter with your keyboard.

  • Open your text editor where you need to type the sign for Diameter.
  • Place your cursor at the desired location.
  • Press and hold down the Alt key.
  • Whilst holding down the Alt key, press the Diameter Alt Code (0216).
  • After typing the code, release the Alt key.

As soon as you release the Alt key, the symbol (Ø) will immediately appear exactly where you place the cursor.

NOTE: Using this Alt Code method, you can type this symbol anywhere, including MS Word, Excel, PowerPoint, Google Sheets, etc.

Diameter Symbol on Mac (Keyboard Shortcut)

Mac keyboard shortcut for the Diameter Symbol is Option + Shift + O.

If you use the Mac OS, you can easily do the Symbol for Diameter on your keyboard using this shortcut. To do this,

  • Click to place your cursor where you need the Diameter sign.
  • Press and hold the Option and the Shift keys simultaneously.
  • Press and release the letter O key as you hold down these keys.

As soon as you hit the O key whilst holding to the Option and Shift key, the symbol (Ø) will be inserted exactly where you placed your cursor.

Diameter Symbol in Word/Excel/PowerPoint

If you are using any of the Microsoft Office apps like Word, Excel or PowerPoint, there’s a very simple mouse navigation you can use to quickly insert the Diameter sign.

NOTE: You can still use the shortcuts above to type this symbol in Word or Excel or PowerPoint. This is just another method.

Below steps will show you how to insert the Symbol for Diameter in Word or Excel or PowerPoint.

  • Open your Word or Excel or PowerPoint.
  • Go to the Insert Tab.
MS Word Insert Tab
  • At the far right section, you’ll see the Symbols group. Select Symbol > More Symbols.
MS Word Insert More Symbols

The Symbol window will appear as below.

Microsoft Word Symbol Window
  • From this window, you can find the symbol (Ø). To find it easily, change the Font to Segoe UI symbol and type 2300 in the Character code: box. As soon as you type the character code, the diameter sign will appear selected.
  • Click the Insert button to insert it into your Word document.
  • Close the Symbol dialog.

These are the steps you may use to insert this (Ø) and any other symbol in Microsoft Word or other Office apps in both Windows and Mac OS.

Diameter Symbol in Google Docs

Google Docs is yet another text editor that people struggle with when it comes to typing or inserting the Sign for diameter.

Meanwhile, Google Docs has the easiest way to insert symbols that are not found on the keyboard. Without further ado, let’s see how this is done.

To get the Diameter Symbol in Google Docs:

  • Open Google Docs and place your cursor where you need the symbol.
  • Go to Insert > Special Characters.
Go to Insert > Special Characters in Google Docs

The Insert special characters window will appear with a search bar and a drawing pad.

  • Using the Search bar, search for Diameter. Then double-click on the Symbol for Diameter in the search results to insert it into Google Docs.
  • You can also use the drawing pad below the search bar to draw the Symbol for Diameter.

These are the steps you may use to insert this and any other symbol in Google Docs.

Sign for Diameter on the Character Map (Windows)

The Character Map in Windows is a tool that is used to view characters in any installed font, to check what keyboard input (or Alt code) is used to type those characters, and to copy characters to the clipboard instead of typing them.

This section will show you how to use the Character Map tools to copy and paste the Diameter Symbol with ease.

Without further ado, let’s get started.

  • Go to the Windows Start menu and search for Character Map.
Searching for the Character Map in Windows
  • The Character Map app will appear in the search result. Click on it to Launch.
  • When it is opened, look at the bottom left of the window and click to expand the Advance view options.
Character Map Advanced View
  • To easily locate the Diameter Symbol on the Character Map, in the Advanced view options, type Diameter in the Search for: box and hit enter.

The symbol will appear for you to copy.

  • To copy this symbol, simply double click on it and it’ll be selected in the Characters to copy box. Then click on the Copy button to finally copy it to your clipboard.
  • Place your cursor wherever you need the symbol and press Ctrl and V to paste the copied symbol.

And there you have it.

These are the steps you may also use to copy and paste the Diameter symbol or any other symbol on your Windows PC.


As much as possible, we’ve tried to cover a lot of information about the diameter Symbol.

Most people find it difficult to type or insert this symbol. So, we’ve broken down the several methods and steps needed to be able to type or insert this symbol on both Windows and Mac.

For further questions or suggestions about the sign for Diameter, please let us know in the comment section below.

Either than that, thanks so much for reading this blog and have a wonderful day.

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