Calculate the water volume of your swimming pool in gallons. Enter the pool dimensions for rectangular, round, or oval shapes. Knowing your pool volume is essential for chemical dosing, heater sizing, pump selection, and estimating fill times.
Enter Your Measurements
Results
Pool Volume
16,831
gallons
Volume
2,250
cubic feet
Volume
63,713
liters
Fill Time (garden hose)
31.2
hours
Water Weight
140,372
lbs
Formula
How to Use This Calculator
How to Use
- 1
Select the pool shape: rectangular or round.
- 2
For rectangular pools, enter length and width. For round pools, enter the diameter as the length.
- 3
Enter the average depth (add shallow end depth and deep end depth, divide by 2).
- 4
Results show volume in gallons and estimated fill time using a standard garden hose.
Frequently Asked Questions
Frequently Asked Questions
How do I calculate average pool depth?
How long does it take to fill a pool?
How many gallons is a typical residential pool?
In-Depth Guides
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About This Calculator
This calculator uses the formula: Rectangular: Gallons = Length × Width × Avg Depth × 7.48 | Round: Gallons = π × (Diameter ÷ 2)² × Avg Depth × 7.48. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.
Built and maintained by the CalcSmart team. Last updated March 2026.
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