Contour Integral
Part of Math Symbols
Contour Integral has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ∮
- Unicode
- U+222E
About this symbol
∮ is the contour integral, an integral taken all the way round a closed loop. It appears in Maxwell’s equations, which describe electricity and magnetism, to add up a field around a closed path.
Unicode facts
- Official name
- CONTOUR INTEGRAL
- Type
- Maths symbol
- Unicode block
- Mathematical Operators
- Unicode group
- Integrals
- Added in
- Unicode 1.1 (1993)
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.