Geometry & Measurement
Calculate areas, volumes, and geometric properties.
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Area Calculator
Calculate the area and perimeter of common shapes — rectangle, circle, triangle, trapezoid, and ellipse.
Volume Calculator
Calculate the volume and surface area of common 3D shapes — cube, box, sphere, cylinder, and cone. Convert between units.
Pythagorean Theorem Calculator
Find the missing side of a right triangle using the Pythagorean theorem. Calculate area, perimeter, and angles.
Slope Calculator
Calculate the slope, distance, midpoint, and line equation from two points. Visualize rise over run.
Circle Calculator
Calculate radius, diameter, circumference, area, sector area, and arc length of a circle from any known value.
Triangle Calculator
Calculate area, angles, heights, perimeter, inradius, and circumradius of any triangle from three sides.
Surface Area Calculator
Calculate surface area, lateral area, and volume for cubes, spheres, cylinders, cones, and pyramids.
Perimeter Calculator
Calculate the perimeter of rectangles, circles (circumference), triangles, and regular polygons with any number of sides.
Angle Calculator
Convert angles between degrees, radians, and gradians. Find complementary and supplementary angles, plus sine, cosine, and tangent values.
Coordinate Distance Calculator
Calculate the distance between two points on a coordinate plane, plus midpoint, slope, and the distance formula breakdown.
Ellipse Calculator
Calculate ellipse area, perimeter, and eccentricity from semi-major and semi-minor axes.
Parallelogram Calculator
Calculate parallelogram area and perimeter from base, height, and side length.
Volume of 3D Shapes Calculator
Calculate volume and surface area of cylinders, cones, spheres, and pyramids. Essential for geometry and construction.
2D Shape Master Calculator
Complete 2D geometry calculator for all common shapes — rectangles, squares, circles, triangles, ellipses, parallelograms, rhombuses, trapezoids, and regular polygons. Calculate area, perimeter, angles, and more.
3D Shape Master Calculator
Complete 3D geometry calculator for all common shapes — cubes, boxes, spheres, cylinders, cones, pyramids, prisms, ellipsoids, torus, and capsules. Calculate volume, surface area, and more.