Gallons, fill time and turnover flow

Pool Volume Calculator

Estimate swimming-pool volume, fill time, circulation flow, water weight and filling cost from pool dimensions and average depth.

Imperial and metric Rounded purchase quantities Cost estimate

Default project preview

17,673 gallons

Fill time

29.5 hours

Circulation target

36.8 gal/min

Cubic volume

66.9 m³

Water weight

66.9 tonnes

Calculator

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Enter the project details and calculate a rounded material estimate.

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Methodology

Transparent calculation

BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.

Average depth = (shallow depth + deep depth) ÷ 2. Volume = length × width × average depth × shape factor. Circulation flow = volume ÷ turnover minutes.

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FAQ

Pool Volume Calculator questions

How is average pool depth calculated?+

For a steadily sloped floor, the shallow and deep depths are averaged. Complex floors need a more detailed calculation.

What turnover time should be used?+

Requirements vary by pool type, jurisdiction and equipment. Follow local standards and equipment guidance.

Why might measured fill volume differ?+

Steps, benches, curves and the actual waterline all change the final volume.