Geometry Calculators
Calculate area, perimeter, volume and surface area for common two- and three-dimensional shapes.
Area Calculator
Calculate the area of rectangles, squares, triangles, circles, trapezoids, parallelograms and ellipses.
Open calculator →Perimeter Calculator
Find the perimeter or circumference of rectangles, squares, triangles, circles and regular polygons.
Open calculator →Rectangle Calculator
Get the area, perimeter and diagonal of a rectangle from its width and height.
Open calculator →Square Calculator
Compute the area, perimeter and diagonal of a square from a single side length.
Open calculator →Triangle Calculator
Solve triangle area from base and height, or from all three sides using Heron’s formula.
Open calculator →Circle Calculator
Enter radius, diameter or circumference and get every other property of the circle.
Open calculator →Trapezoid Calculator
Calculate trapezoid area from parallel sides and height, with perimeter when leg lengths are known.
Open calculator →Parallelogram Calculator
Find parallelogram area from base and height, plus perimeter when a side length is given.
Open calculator →Cylinder Calculator
Calculate cylinder volume, lateral surface area and total surface area from radius and height.
Open calculator →Sphere Calculator
Get sphere volume and surface area instantly from the radius.
Open calculator →Cone Calculator
Compute cone volume, slant height, lateral area and total surface area.
Open calculator →Cube Calculator
Derive cube volume, surface area and space diagonal from one edge length.
Open calculator →Volume Calculator
Calculate the volume of boxes, cylinders, spheres, cones and rectangular pyramids.
Open calculator →