🏊 Pool Volume Calculator
Calculate the water volume of your swimming pool in gallons or liters. Supports rectangular, circular, oval, and kidney shapes. Includes water weight, filtration cycle time, and fill cost estimate.
📐 Pool Volume Calculator
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❓ Frequently Asked Questions
How do I calculate the volume of my pool?
For a rectangular pool: length × width × average depth × 7.48 = gallons. For a circular pool: π × radius² × depth × 7.48. For an oval pool: π × (length÷2) × (width÷2) × depth × 7.48. For a kidney-shaped pool: length × width × depth × 0.75 × 7.48. Average depth = (shallow end + deep end) ÷ 2. One cubic foot = 7.48 gallons.
How many gallons is my pool?
It depends on your pool shape and size. A typical backyard rectangular pool (15×30 ft, 4.5 ft average depth) holds about 15,100 gallons. A small round above-ground pool (15 ft diameter, 4 ft deep) holds about 5,300 gallons. Use this calculator with your pool dimensions for an accurate result.
How much does a gallon of pool water weigh?
One gallon of water weighs about 8.34 pounds (3.785 kg). One liter weighs about 1 kg. A 15,000-gallon pool weighs approximately 62.6 tons. Knowing the water weight helps assess ground load and structural safety.
How often should I run my pool pump?
It is recommended to filter your entire pool volume 1-2 times per day. Turnover time = pool volume ÷ pump flow rate. For example, a 15,000-gallon pool with a 60 GPM pump takes about 4.2 hours per cycle. During heavy summer use, aim for 2 cycles per day.
How much does it cost to fill a pool?
It depends on your pool volume and local water rates. For a 15,000-gallon pool at the U.S. average rate of about $4 per 1,000 gallons, the fill cost would be about $60. Use this calculator with your local water rate for a specific estimate.