Integral can refer to one of several closely related concepts from calculus.

• The indefinite integral, which is a family of functions formed by adding an arbitrary constant to an antiderivative.
• The definite integral, which gives the area under a curve between two points.
• The line integral, which measures the net effect of a vector field on a curve through its domain.
• The flux integral, which measures the amount of flow through a given surface in a vector field.