Geometry calculators
Triangles, circles, rectangles, cylinders, and spheres from lengths you type.
6 tools
In this group
Right triangles: Pythagoras. SSS with Heron and angles: triangle. Circle accepts radius, diameter, circumference, or area. Solids: cylinder and sphere. Slope and 2D distance sit with the other math calculators.
- Circle Calculator Radius, diameter, circumference, and area. Enter any one; the rest follow with π from this device.
- Cylinder Calculator Right circular cylinder: volume, lateral area, and total surface area.
- Pythagorean Theorem Calculator Solve a² + b² = c². Enter exactly two of a, b, and c.
- Rectangle Calculator Rectangle area, perimeter, and diagonal. A square is the case length = width.
- Sphere Calculator Sphere volume and surface area from radius.
- Triangle Calculator SSS triangle: Heron area, perimeter, all three angles, side class, and acute/right/obtuse.