About the volume calculator
Volume is the amount of space inside a three-dimensional object. Choose a shape, enter the dimensions in one unit and you get volume, surface area and the equivalent in liters, gallons and cubic feet. This is handy for tanks, planters, pools and packaging.
Formula
Box = l × w × h. Cylinder = π r² h. Sphere = 4/3 π r³. Cone = 1/3 π r² h. Square pyramid = 1/3 s² h.
Frequently asked questions
How do I convert cubic feet to gallons?
Multiply cubic feet by 7.48. One cubic foot holds about 7.48 US gallons.
What is the volume of a cylinder?
Multiply π by the radius squared by the height.