Integral Symbol
The ∫ symbol (integral) represents integration in mathematics.
U+222B
The ∫ symbol is the standard notation for integration. You’ll see it in formulas for areas, totals, and accumulated change. This page helps you copy it and use it correctly in different contexts.
Integral Symbol Meaning
The symbol ∫ is known as the integral sign. In mathematics, it indicates that a quantity is being accumulated over an interval, which leads to an antiderivative (an indefinite integral) or the net accumulated value over limits (a definite integral). The lower and upper bounds (for example, ∫ from a to b) specify the range of accumulation. In practical terms, integrals can model totals from rates, compute areas under curves, and describe continuous accumulation in physics and engineering. When you need to type it in documents or code, use the HTML entity, CSS escape, or Unicode code point provided.
Common uses
- •Writing definite or indefinite integrals in math notes and homework
- •Labeling integration in calculus problem-solving and textbooks
- •Expressing accumulated totals from a rate function in science writing
- •Formatting equations in documents, slide decks, and reports
- •Displaying the integral symbol in websites and apps using Unicode
Examples
∫ Integral Symbol | Copy & Use
- ∫∫ x^2 dx
- ∫∫(0 to 1) x^2 dx
- ∫Area = ∫_a^b f(x) dx
- ∫Total = ∫_t1^t2 r(t) dt
- ∫Antiderivative: F(x) = ∫ f(x) dx
Variations
Ready to copy
Technical codes
| Unicode | U+222B | |
| HTML Entity | ∫ | |
| HTML Code | ∫ | |
| CSS | \222B | |
| Alt Code | Alt + 8747 | |
| Decimal | 8747 |
How to type Integral Symbol (∫)
On Windows
Hold Alt and type 8747 on the numeric keypad. In Word, type 222B then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 222B. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 222b, then press Enter or Space.
Anywhere
Copy ∫ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
How do I copy the integral symbol ∫?
Copy the character shown on this page (∫). For web text or code, you can also use the HTML entity ∫ or the Unicode code point U+222B.
What is the Unicode code point for ∫?
The Unicode code point is U+222B.
Can I use ∫ in HTML and CSS?
Yes. In HTML, use the entity ∫. In CSS, you can use the escape \\222B.
What does ∫ mean in calculus?
It denotes integration: an indefinite integral (without limits) or a definite integral (with lower and upper bounds) to represent accumulated change or total area under a curve.