Integral Symbol (∫)
Integral Symbol
The integral sign denotes integration, accumulated quantity, or area under a curve.
Codes for ∫
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How to Type ∫ on Windows and Word
For the most reliable Windows method, copy the symbol from this page. In Microsoft Word, type 222B and press Alt+X. Word converts the hexadecimal Unicode value into ∫. Press Alt+X again to switch the symbol back to its code.
How to Type ∫ on Mac, Chromebook, and Linux
On a Mac, open Character Viewer with Control+Command+Space, search for “Integral Symbol”, and insert it. Chromebook users can copy the symbol or use the Unicode input method where supported. On Linux, press Ctrl+Shift+U, type 222b, and press Enter.
Examples and Correct Usage
A definite integral includes lower and upper bounds; an indefinite integral normally includes a constant of integration.
Use the actual Unicode character rather than a visually similar keyboard substitute when the distinction matters in mathematics, science, accessibility, searching, or data processing.