Geometry

Calculate the area of rectangles, triangles, circles, trapezoids, sectors, ellipses and parallelograms from a few simple measurements.

Compute the diameter, circumference and area of a circle instantly from its radius.

Find the hypotenuse of a right triangle from its two legs, plus perimeter, area and angles. The classic a² + b² = c² in one click.

Solve a right triangle from its two legs: hypotenuse, both angles, perimeter and area in one click.

Find the surface area of a cube, cuboid, cylinder, sphere or cone from its dimensions, with lateral versus base area split plus volume.

Solve a triangle from three sides or a base and height: get the area, perimeter and all three angles instantly with Heron's formula and the law of cosines.

Calculate the volume of spheres, cones, cylinders, cubes, boxes, capsules, pyramids and ellipsoids from a few simple measurements.