Home & Construction
Pool Volume Calculator - Calculate swimming pool water volume
Calculate swimming pool water volume
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
How to calculate average depth?
For sloped bottom: (Shallow + Deep) / 2. For hopper: use weighted average based on section lengths.
How long to fill a pool?
A garden hose delivers ~9 GPM. 15,000 gallon pool ≈ 28 hours. Use multiple hoses or truck delivery.
How much chlorine to add?
About 1 lb of chlorine per 10,000 gallons to raise level by 1 ppm. Start with 2-3 ppm.
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About this tool
This Pool Volume Calculator turns your inputs into practical results. Provide Pool Shape, Length, and Width to calculate Fill Time (garden hose) and Volume.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.