What is the Unicode code point for the integral symbol?

The integral symbol (∫) is U+222B. The double integral (∬) is U+222C, the triple integral (∭) is U+222D, and the contour integral (∮) is U+222E, all in the Unicode Mathematical Operators block.

What is the keyboard shortcut for the integral symbol?

There is no classic Alt code. On Windows, type 222B in Word or Outlook then press Alt+X. On Mac, open Character Viewer with Control+Command+Space and search "integral". On Linux, press Ctrl+Shift+U, type 222b, then press Enter or Space.

How do I insert the integral symbol in HTML?

Use the named entity ∫ or the numeric entities ∫ (decimal) and ∫ (hex). The double, triple, and contour integrals have named entities too: &Int;, &tint;, and &oint;.

What is the LaTeX command for an integral?

Use \int in math mode for a single integral, \iint for a double integral, \iiint for a triple integral, and \oint for a contour integral. Add limits with subscript and superscript, for example \int_{a}^{b} f(x)\,dx.

What is the difference between the integral symbol and the contour integral symbol?

The plain integral (∫) evaluates a function over an interval or region. The contour integral (∮) adds a small circle through the integral sign to show the path is a closed loop, used for line integrals in complex analysis and physics.

When do I use a double or triple integral instead of a single one?

A double integral (∬) evaluates a function over a two-dimensional region, and a triple integral (∭) evaluates a function over a three-dimensional volume. Each extra integral sign represents one more dimension of integration.

Integral Symbol

Name: Integral Symbol
Availability: InStock
Author: Nham Vu

Click to copy the integral symbol (∫), see the double, triple, and contour integral variants, and get the Unicode code point, HTML entity, and LaTeX for each.

Click the symbol to copy Integral to your clipboard.

Choose an integral symbol

Copy formats for Integral

How to type it by operating system

Windows

Mac

Linux

Copied!

Summary

Click to copy the integral symbol (∫), see the double, triple, and contour integral variants, and get the Unicode code point, HTML entity, and LaTeX for each.

How it works

Click the large ∫ symbol at the top, or any variant card, to copy that character to your clipboard.
Select single, double, triple, or contour integral to switch the active character.
The format panel updates with the Unicode code point, HTML entity, LaTeX command, and CSS content value for the selected character.
The Windows, Mac, and Linux panels show the keyboard method for typing that character on each platform.
Click any format value to copy just that string, such as the LaTeX command or the HTML entity.

Use cases

Paste the integral symbol into calculus homework, worksheets, or slides.
Insert ∫ or ∫ into HTML without breaking encoding.
Grab the LaTeX \int command for a formula in a paper or README.
Find the Windows method for typing the integral sign when Word or Notepad blocks Unicode input.
Copy the double integral (∬) or triple integral (∭) symbol for a multivariable calculus problem.
Copy the contour integral (∮) symbol for a line-integral or complex-analysis formula.
Use the CSS content value to render an integral sign in a ::before/::after pseudo-element.
Look up the Unicode code point for an integral operator used in a formula editor or font check.

Frequently Asked Questions

Last updated: 2026-07-22 · Reviewed by Nham Vu