How to use the Pool Volume Calculator

Convert pool dimensions and depths into approximate US gallons and liters.

Calculation formula

Rectangular pool volume = length × width × average depth, with average depth = (shallow + deep)/2; US gallons = ft³ × 7.48051948.

Recommended steps

1. Enter values using the units shown beside each field.
2. Review whether the example assumptions match your situation.
3. Run the calculator and compare the key metrics.
4. Use the source data or official rates when precision matters.

Known limitations

Approximates a rectangular pool with a uniformly sloped floor; steps, benches and curved edges change actual volume.