Geometry
Calculators.
Calculators for shapes, areas, volumes, and spatial relationships
Triangle Area Calculator - Free Online Geometry Calculator
Calculate triangle area using multiple methods: base-height, three sides (Heron's formula), or coordinates. Perfect for students and educators.
Circle Calculator - Free Online Circle Area & Circumference Calculator
Calculate circle area, circumference, diameter, and radius instantly. Free online circle calculator with visual diagram and step-by-step solutions.
Rectangle & Square Calculator - Free Online Area, Perimeter & Diagonal Calculator
Calculate rectangle and square area, perimeter, and diagonal length instantly. Free online calculator with visual diagrams and step-by-step solutions.
Pythagorean Theorem Calculator - Free Online Right Triangle Calculator
Calculate missing sides of right triangles using the Pythagorean theorem. Find hypotenuse or legs with our free visual calculator and step-by-step solutions.
Polygon Area Calculator - Free Online Regular Polygon Calculator
Calculate area and perimeter of regular polygons (pentagon, hexagon, octagon, etc.). Free calculator with visual diagrams and formulas.
3D Volume Calculator - Free Online Cube, Sphere, Cylinder & Cone Calculator
Calculate volume and surface area of 3D shapes including cubes, spheres, cylinders, cones, and pyramids. Free calculator with visual diagrams.
Distance Between Points Calculator - Free 2D & 3D Distance Calculator
Calculate the distance between two points in 2D or 3D space. Find distance, midpoint, and slope with visual representation and step-by-step solutions.
Angle Converter - Free Degrees, Radians, Gradians Converter
Convert angles between degrees, radians, gradians, and turns. Includes DMS (degrees, minutes, seconds) conversion with visual representation.
Golden Ratio Calculator - Free Phi Calculator & Golden Rectangle Generator
Calculate golden ratio proportions, find golden rectangle dimensions, and explore Fibonacci sequences. Visual tools for design and art.
Coordinate Geometry Calculator - Free Line Equations & Intersection Calculator
Calculate line equations, find intersections, perpendicular and parallel lines, and analyze geometric properties in the coordinate plane.
Arc Length Calculator - Free Circle Arc & Sector Calculator
Calculate arc length, sector area, chord length, and segment area. Works with degrees and radians. Visual circle diagram included.
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