Geometry Calculator
Area, perimeter, volume of shapes
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About the Geometry Calculator
Free geometry calculator for students: compute area, perimeter, circumference, surface area, and volume for 11 common shapes — circle, triangle, rectangle, square, trapezoid, ellipse, sphere, cube, cuboid, cylinder, and cone. Every result shows the formula used (like Area = πr²), so you learn the method while getting the answer for homework and exam prep.
How to use
- 1Pick 2D or 3D, then choose a shape.
- 2Enter the dimensions (radius, base, height…).
- 3Read results with their formulas and copy any value.
FAQ
Does it show the formulas?
Yes — each result row displays the formula used, e.g. V = 4⁄3πr³ for a sphere, so it doubles as a study aid.
Related Math & Study tools
Geometry Calculator is part of DevKit — 100 free, privacy-first tools for developers, students, and everyone, built by Minhazul Ashim. Everything runs in your browser; your data never leaves your machine.