Why use our Multiple Integral Calculator?
Evaluate complex double and triple integrals over customized bounds intuitively. Utilize native support for coordinate changes to map variables freely, applying automatic Jacobian determinant calculations specifically built for Polar and Spherical domains.
Double (2D)
Calculate volume under a 3D surface or the area of 2D regions.
Triple (3D)
Calculate total mass, center of mass, and hyper-volumes in 3D space.
Change of Variables
Automatically map geometries via Jacobian determinants (e.g. Polar).
How Integration Works
Multiple integration expands standard single-variable calculus to volumes and n-dimensional spaces. This tool evaluates innermost integrals analytically step-by-step first, substitutes the inner bounds into the remaining expression, and iterates chronologically outward. If a Change of Variables is required (such as shifting (x,y) to Polar (r,θ)), it will automatically differentiate your mapping matrix to derive and multiply the proper Jacobian scale factor before initiating iterations.