Integral Symbol (∫)
Copy the Integral symbol ∫ to your clipboard, and see its Unicode code point, HTML entity, LaTeX command and how to type it on any device.
What does ∫ mean?
The integral sign represents integration — summing infinitely many infinitesimal pieces. A definite integral ∫₊ᵇ f(x)dx gives the area under a curve; an indefinite integral gives an antiderivative. It is fundamental to calculus, physics and engineering.
Codes and properties
| Character | ∫ |
|---|---|
| Unicode name | INTEGRAL |
| Code point | U+222B |
| Decimal | 8747 |
| Unicode block | Mathematical Operators |
| HTML entity | ∫ · ∫ · ∫ |
| CSS | \222B |
| JavaScript / JSON | \u222B |
| Python | \u222B or \N{INTEGRAL} |
| UTF-8 bytes | E2 88 AB |
| LaTeX | \int |
How to type ∫
- Copy & paste: press the Copy button above, then paste ∫ anywhere — Word, Google Docs, email, chat or code.
- Windows (Word, WordPad, Outlook): type
222Bthen press Alt+X. In any app, Win+. opens the symbol panel. - Mac shortcut: press Option+B (US keyboard layout).
- Mac (any symbol): switch to the Unicode Hex Input keyboard, hold Option and type
222B; or press Ctrl+Cmd+Space and search “integral”. - Linux (GTK/IBus): press Ctrl+Shift+U, type
222b, then Space. - HTML:
∫renders as ∫. - LaTeX:
\intin math mode (amssymb package for some symbols).
Frequently asked questions
What is the difference between a definite and indefinite integral?
A definite integral has limits and yields a number (e.g. an area); an indefinite integral yields a family of functions plus a constant.
How do I type the integral sign?
Copy it from the keyboard above, or use LaTeX \int and the Unicode/HTML shown above.
How do I type ∫ on Windows?
In Microsoft Word type 222B and press Alt+X. In any app press Win+. to open the symbol panel, or copy ∫ from this page.
How do I type ∫ on a Mac?
Press Option + B on a US keyboard layout, or open the Character Viewer with Ctrl+Cmd+Space and search for it.
What is the HTML code for ∫?
Use ∫ or ∫ (hex) or ∫ (decimal).
What is the LaTeX command for ∫?
Use \int in math mode.
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Reference: Unicode code chart: Mathematical Operators (U+2200–U+22FF)