Quick start
- Choose the solid shape you want to calculate.
- Enter the required dimensions for that shape.
- Use one length unit for all measurements.
- Press Calculate volume and read the cubic-unit result.
Supported volume shapes
The calculator supports rectangular prisms, cubes, cylinders, spheres, and cones. Each mode shows only the fields needed for that shape.
Rectangular prism and cube modes use straight side lengths. Cylinder, sphere, and cone modes use radius, and cone and cylinder modes also use height.
Understanding cubic units
Volume is reported in cubic units because it measures three-dimensional space. If the input is in centimeters, the answer is in cm^3.
Use the unit label field to make copied answers easier to read in notes, homework, or planning examples.
Volume versus surface area
Volume measures the inside capacity of a solid. Surface area measures the outside area.
If you need wrapping, painting, or outside material estimates, use the Surface Area Calculator instead.
Examples from the calculator
120 cubic units
282.743338823 cubic units
268.0825731063 cubic units
History, privacy, and copying
Recent answers stay visible in the page while you work. The history is kept only in the current browser tab and is not sent to a server.
Copy answer copies the expression and result so you can paste it into notes, homework, a message, or another document.