Volume Calculator
Calculate geometric volume of common shapes
Find the volume of common 3D shapes — rectangular prism, cube, cylinder, sphere, and cone — from their dimensions. Choose a shape, enter the measurements, and read the volume.
Calculate the geometric volume of common 3D shapes from their dimensions. This computes volume — it does not convert units.
Volume
150
cubic units
How to Use This Calculator
- Pick the shape from the dropdown.
- Enter the dimensions it asks for (for example, radius and height for a cylinder).
- Read the volume.
Why Use This Calculator?
- Estimating how much a container or tank holds.
- Checking geometry homework.
- Visualizing how volume changes when dimensions change.
Real-World Examples
Sphere with radius 3
Volume is ⁴⁄₃ × π × 3³ ≈ 113.10 cubic units.
Rectangular prism 10 × 5 × 3
Volume is 10 × 5 × 3 = 150 cubic units.
The volume formulas
A rectangular prism is length × width × height; a cylinder is π × radius² × height; a sphere is ⁴⁄₃ × π × radius³; a cone is ⅓ × π × radius² × height.
Frequently Asked Questions
What units is the answer in?
The same cubic units as your inputs. If you enter meters, the volume is in cubic meters. No unit conversion is performed.
Radius or diameter?
The formulas use radius. If you measure diameter, halve it before entering.
How is this different from the area calculator?
Area is two-dimensional (flat shapes); volume is three-dimensional (how much space a solid fills).
Important Disclaimer
Computes geometric volume from the dimensions you enter; it does not convert units.
Privacy
Your entries stay in your browser and aren't stored or transmitted.
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