Windows
2 options- In Word / Outlook: type 2218 then press Alt + X.
- Anywhere: press Win + . to open the emoji & symbol picker, then search.
Ring Operator Symbol
A symbol from the Math Symbols collection. Click the symbol or the button below to copy.
- Symbol
- ∘
- Unicode
- U+2218
- HTML entity
- ∘
- Category
- Math Symbols
Export
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Background
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75 of 96 in the math symbols collection
About the ring operator symbol
In mathematics, the ring operator is used to denote function composition, as in (f ∘ g)(x) meaning f applied to the result of g(x). It also appears in category theory to represent composition of morphisms and in abstract algebra for the operation in a ring, where it can indicate the multiplication operation, often distinguished from addition.
How to type Ring Operator
Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.
macOS
2 options- Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 2218.
- Or: Control + Command + Space opens the Character Viewer — search by name.
Linux
1 step- Press Ctrl + Shift + U, type 2218, then press Enter or Space.
Copy in every format
Every form of this character — for HTML, CSS, JavaScript, URLs and more. Click any value to copy.
Related math symbols
Other math symbols you can copy and paste — explore similar Unicode characters from the same family.
- +Plus SignCopy the plus sign symbol→
- −Minus SignCopy the minus sign symbol→
- ×Multiplication SignCopy the multiplication sign symbol→
- ÷Division SignCopy the division sign symbol→
- ±Plus-Minus SignCopy the plus-minus sign symbol→
- ∓Minus-Or-Plus SignCopy the minus-or-plus sign symbol→
- =Equals SignCopy the equals sign symbol→
- ≠Not Equal ToCopy the not equal to symbol→
- ≈Almost Equal ToCopy the almost equal to symbol→
- ≡Identical ToCopy the identical to symbol→
- ≤Less-Than Or Equal ToCopy the less-than or equal to symbol→
- ≥Greater-Than Or Equal ToCopy the greater-than or equal to symbol→
Explore related collections
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