Integral Symbol (∫)
HTML entity for the integral symbol (∫). Learn how to use ∫ or ∫ in HTML for calculus notation and mathematical formulas.
Math
∫
Integral Symbol
All Formats
| Format | Value |
|---|---|
| Character | ∫ |
| HTML Entity | ∫ |
| HTML Code (Decimal) | ∫ |
| Unicode | U+222B |
| CSS Content | \222B |
| Category | Math |
About Integral Symbol
The integral symbol (∫) is a fundamental mathematical notation used to represent integration in calculus. It was introduced by Gottfried Wilhelm Leibniz in the late 17th century and is derived from the long "s" character.
In HTML, insert this symbol using ∫, ∫, or ∫. The named entity ∫ is short and well-supported across all modern browsers. For definite integrals with bounds, combine this symbol with <sub> and <sup> elements, or use MathML for formal mathematical typesetting.
The integral symbol is part of the Mathematical Operators Unicode block. Related symbols include the double integral (∬, ∬), triple integral (∭, ∭), and contour integral (∮, ∮). These variations are used in multivariable calculus and complex analysis.
In CSS, use "\222B" with the content property for pseudo-element insertion. The integral symbol is essential for educational websites, physics resources, engineering calculators, and any content involving calculus. Screen readers announce it as "integral," providing appropriate mathematical context.
Usage Examples
<!-- Using named entity -->
<p>This is the Integral Symbol: ∫</p>
<!-- Using numeric code -->
<p>This is the Integral Symbol: ∫</p>
<!-- Using the character directly (UTF-8) -->
<p>This is the Integral Symbol: ∫</p>
<!-- In CSS -->
.icon::before {
content: "\222B";
}FAQ
What is the HTML entity for Integral Symbol?
The Integral Symbol (∫) can be inserted using the named entity ∫, the numeric code ∫, or by pasting the character directly in a UTF-8 document.
How do I use ∫ in CSS?
In CSS, use the content property with the value "\222B". For example: content: "\222B";
What is the Unicode code point for Integral Symbol?
The Unicode code point for Integral Symbol is U+222B. This is the universal identifier for this character across all platforms and programming languages.
Try It in the HTML Entity Tool
Use our HTML Entity Encoder & Decoder to encode and decode HTML entities, convert between named, numeric, and hex formats, and explore the full entity reference table.