Double Integral
Part of Math Symbols
Double 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+222C
About this symbol
∬ is the double integral, which adds up a quantity over an area, such as the mass of a flat plate of uneven thickness. Its partner ∭, the triple integral, adds over a volume.
Unicode facts
- Official name
- DOUBLE 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.