Find the volume of any common solid. This free volume calculator covers boxes, cubes, spheres, cylinders, cones and pyramids — with the result in cubic units and litres.
Solid & size
Choose a 3-D shape and enter its dimensions. Volume is given in cubic units of whatever unit you use (e.g. cm → cm³). A litre = 1000 cm³.
Volume
—
Enter the dimensions
Volume measures the 3-D space a solid occupies. For the area of a flat shape use the area calculator; for the distance around a circle use the circumference calculator.
Use this free volume calculator to find the volume of common 3-D shapes — box, cube, sphere, cylinder, cone and pyramid. Pick a solid, enter its dimensions and get the volume instantly.
What this volume calculator does
A volume calculator finds the 3-D space a solid occupies. Choose from six common shapes, enter the dimensions, and it applies the right formula — and converts to litres for everyday use.
Volume formulas by shape
Shape
Volume formula
Box (prism)
length × width × height
Cube
edge³
Sphere
4⁄3 × π × r³
Cylinder
π × r² × height
Cone
⅓ × π × r² × height
Pyramid
⅓ × base area × height
For example, a box 10 × 5 × 4 has a volume of 200, and a sphere of radius 5 holds about 523.6 cubic units.
Cubic units and litres
Volume is in cubic units — cm³, m³, and so on. A handy conversion: 1 litre = 1000 cm³, so a 10 cm cube holds exactly one litre. The calculator shows the litre equivalent automatically.
How to use the volume calculator
Select a 3-D shape from the dropdown.
Enter its dimensions in the fields shown.
Read the volume, with the litre equivalent.
Volume FAQ
How do I calculate volume?
It depends on the solid: a box is length × width × height, a cylinder is π × r² × height, and a sphere is 4⁄3 × π × r³. Pick your shape and the calculator applies the right formula.
How do I find the volume of a cylinder?
Multiply π by the radius squared by the height: V = πr²h. A cylinder of radius 3 and height 10 holds about 282.7 cubic units.
How do I find the volume of a sphere?
Use V = 4⁄3 × π × r³. A sphere of radius 5 has a volume of about 523.6 cubic units.
How do I convert volume to litres?
If your measurements are in centimetres, divide the cubic-centimetre volume by 1000. A 10 cm cube is 1000 cm³, which equals 1 litre. The calculator shows litres for you.
What units is volume measured in?
Cubic units — cm³, m³, and so on — matching your input unit. Keep all dimensions in the same unit for a correct result.
Is the volume calculator free?
Yes, this volume calculator is completely free, needs no sign-up, and gives instant results in your browser.
