Pool Volume Calculator
Gallons or liters for any pool shape
Gallons (US)
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Liters
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📚 Learn more — how it works, FAQ & guide Click to expand
Learn more — how it works, FAQ & guide
Click to expand
Free pool volume calculator
Calculate water volume of any pool. Essential for chemical dosing + heater sizing.
How to use this tool
- 1
Pick pool shape
Rectangular, circular, or oval.
- 2
Enter dimensions
All in same units (feet or meters).
- 3
Get gallons + liters
Plus chemical dosing reference.
Frequently Asked Questions
Why gallons and liters?
US uses gallons, rest of world uses liters. We show both.
Variable depth?
Use average depth: (shallow + deep) / 2.
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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.