Pick a 3D shape and enter its dimensions to find the volume instantly.
Volume Calculator
LiveVolume
120
Use the same unit for every measurement; the result will be in that unit cubed.
The formulas
Cube: side^3
Rectangular prism: length x width x height
Sphere: (4/3) x pi x radius^3
Cylinder: pi x radius^2 x height
Cone: (1/3) x pi x radius^2 x height
Example
A box 6 x 5 x 4: volume = 6 x 5 x 4 = 120. A sphere with radius 3: volume = (4/3) x pi x 27 ≈ 113.1.
Step-by-step guide
- Select the shape you're measuring.
- Enter its dimensions - the input fields update automatically.
- Read the volume, shown in your unit cubed.
Common mistakes
Using diameter instead of radius for spheres, cylinders, and cones - all three formulas need the radius (half the diameter).
Forgetting a cone's volume is one-third of a cylinder with the same base and height, not the same.
Frequently asked questions
What unit will my answer be in?
Whatever unit you entered, cubed - for example, entering centimeters gives a result in cubic centimeters.
How do I convert volume to liquid capacity?
1 cubic centimeter equals 1 milliliter, and 1,000 cubic centimeters equals 1 liter - useful for converting a calculated volume into a liquid measurement.
What about irregular 3D shapes?
Break the shape into simpler solids you can calculate separately, then add the volumes - the same approach used for irregular areas.
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