Calculate the exact volume of your storage tank with our comprehensive tank calculator. Whether you need to size a water storage tank, determine oil tank capacity, or calculate chemical storage requirements, our free calculator handles all common tank shapes with instant results in gallons, liters, and cubic feet.
Simply select your tank type, enter the dimensions, and get accurate volume calculations instantly. Our calculator supports horizontal and vertical cylinders, rectangular tanks, oval tanks, capsule tanks, cone-bottom tanks, and more.
How to Calculate Tank Volume by Shape
Horizontal Cylindrical Tanks
The most common type of storage tank. To calculate volume:
Where: r = radius, L = length
Example: A 4-foot diameter tank that's 10 feet long holds approximately 942 gallons.
Vertical Cylindrical Tanks
Common for water towers and industrial storage. Uses the same formula with height:
Where: r = radius, H = height
Rectangular Tanks
The simplest calculation - multiply length × width × height:
To convert cubic inches to gallons, divide by 231.
Frequently Asked Questions
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