Geometry Calculator
Calculate area, perimeter, volume, and surface area for all essential 2D and 3D shapes.
Select a shape and enter values, then click Calculate.
How to use
- Select a 2D or 3D shape from the buttons above.
- Enter the required dimensions (radius, side, length, etc.).
- Click Calculate – results (area, perimeter, volume, surface area) appear instantly.
- Use Copy Results to copy all computed values.
- All formulas are explained step by step.
🔒 100% client‑side – your data never leaves your device.