FREE ONLINE CALCULATOR

Pool Volume Calculator

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

✓ Instant results ✓ Editable inputs ✓ Formula explained

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CONSTRUCTION · TOOLS

MEASURE Enter project dimensions

ESTIMATE Calculate material volume

PLAN Check practical assumptions

CALCULATION TOOL

Pool Volume Calculator

Change any value and calculate again.

Uses the values you enter. No account required.

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ABOUT THIS TOOL

When to use a pool volume calculator

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

All assumptions are visible and adjustable. Check rates and underlying data against original sources before making a decision.

HOW IT WORKS

The calculation

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

Read the full guide →

ASSUMPTIONS

Know the limitations

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

Results are estimates derived from your inputs.