Browse by topic

Geometry Calculators

Calculate right triangles, distance, triangle measurements, circles, and common areas with formulas and examples.

Geometry tools make formulas concrete by showing what each input means, how it is substituted, and how the final measurement is produced.

Pythagorean Theorem Calculator

Find a missing side of a right triangle using a^2 + b^2 = c^2, with substitution steps.

Find the distance, midpoint, and slope between two points with the distance formula and step-by-step work.

Find the midpoint of a segment between two points by averaging the x- and y-coordinates, with steps.

Solve any triangle from three values (SSS, SAS, ASA, AAS, SSA) for all sides, angles, area, perimeter, and radii.

Solve a right triangle from any two values - legs, hypotenuse, or an acute angle - with steps for sides, angles, and area.

Solve a circle from radius, diameter, circumference, or area, plus sector area and arc length from a central angle.

Calculate area for 11 shapes: square, rectangle, parallelogram, triangle, trapezoid, rhombus, kite, ellipse, sector, regular polygon, and circle.

Calculate the volume of a cube, rectangular prism, cylinder, sphere, cone, or square pyramid with formula steps.

Calculate the surface area of a cube, rectangular prism, cylinder, sphere, cone, or square pyramid with steps.