Water Tank Capacity Calculator
Calculate the capacity of a cylindrical or rectangular water tank.
Assumptions used in this calculation
- Ideal geometric shape: Assumes a perfect cylinder or rectangular box, tanks with rounded corners, sloped bottoms, or irregular shapes will hold slightly less than the calculated volume.
- Full-capacity volume: Reports the tank's geometric capacity at full fill, not the usable volume, real tanks are typically not filled to the absolute brim in practice.
About this calculator
Calculates the capacity of a cylindrical or rectangular water tank in litres, cubic meters, and gallons from its dimensions.
Worked example
Cylindrical tank, 2m diameter, 3m height
Result: ≈ 9,425 litres
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