Easy to use online geometry calculators and solvers for various topics in geometry such as calculate area, volume, distance, points of intersection. These may be used to check homework answers, practice or explore with various values for deep understanding.

Triangle Calculators

Right Triangle Calculator and Solver. Four easy to use calculators to solve right triangle problems depending on which information about the triangle you are given.

Heron's Formula for Area of a Triangle. An online geometry calculator to calculate the area of a triangle using sine formula when two sides and the angle between them are known (SAS case).

Distance and Midpoint in 3D Geometry - Calculator. Online calculator to calculate the distance between two points and their midpoint when these points are given by their cartesian coordinates in a 3 dimensional space

Trapezoid Area Calculator. Calculator to calculate the area of a trapezoid given the bases and the height.

Trapezoid Calculator and Solver. An easy to use online calculator to solve trapezoid problems. The area, the angles and the diagonals of a Trapezoid are calculated given its 4 sides.

Regular Polygons Calculator. Online calculators to calculate side, the radius of inscribed circle, the radius of circumscribed circle and area of polygons.

Irregular Polygon Area Calculator.Online calculator to calculate the area of an irregular polygon whose vertices are given by their Cartesian coordinates.

Cosine Law Calculator and Solver. Calculator that solves triangle problems given 3 sides (SSS case) or 2 sides and 1 included angle (SAS case).

Sine Law Calculator and Solver. Calculator that solves triangle problems given 2 angles and one side (ASA and AAS cases) or 2 sides and one opposite angle (SSA case). The SSA case includes one, two or no solutions.