Enter your Tank Type, dimensions (Length, Diameter, or Height), and Fill Depth to calculate the Filled Volume of your tank — plus Total Capacity, Fill Percentage, and Remaining Capacity — in whatever Measurement Unit and Output Unit works for you.
Filled Volume
--
Total Capacity
--
Fill Percentage
--
Remaining Capacity
--
To calculate water tank volume, select your tank shape and enter the dimensions. For cylindrical tanks, use the formula V = π × r² × height. For rectangular tanks, multiply length × width × height.
This calculator supports horizontal and vertical cylinders, rectangular tanks, and horizontal and vertical oval tanks. Each shape uses specific geometric formulas for accurate volume calculations.
The calculations are based on exact geometric formulas and are very accurate for tanks matching these shapes. Real tanks may have slight variations in shape or internal features that could affect actual volumes.
Yes, enter the fill depth to calculate how much liquid is currently in your tank. The calculator will show filled volume, remaining capacity, and fill percentage.
You can input dimensions in feet, inches, meters, or centimeters. Output volumes can be displayed in US gallons, liters, cubic feet, or cubic meters.
Cylindrical tanks are stronger and more efficient at handling pressure. They distribute stress evenly and require less material for the same volume compared to rectangular tanks.
Use a measuring stick or dipstick to measure from the bottom of the tank to the liquid surface. For horizontal cylinders, measure the vertical depth of liquid.