Pool Volume Calculator
Enter your pool's dimensions and shallow and deep water depths to estimate US gallons. Use actual water measurements in feet. The tool uses shape area × average water depth × 7.48052; steps, benches, and irregular contours can change the true volume.
Illustrative example: A rectangular 30 × 15 ft pool averaging 5 ft deep is about 16,831 gallons. Recheck the volume against actual fill or service records when precise dosing matters.
Use your volume estimate
Recheck gallons before using the result
Small errors in water depth can materially affect the estimate. Use your volume as an input for circulation, heating and water-balance planning, then verify it when a precise treatment amount is needed.
Pool Volume
Estimate gallons for a rectangular, oval, or round pool using its dimensions and average depth.
Simple geometry and average depth omit steps, benches and irregular contours. Shared volume stays in this browser tab until it is closed.
