Pool Volume Calculator
Estimate gallons for rectangular, round, oval and kidney-shaped pools. Save your result to use throughout our calculator collection.
Open calculator →Pool Calculators
Plan your pool water, equipment and operating costs with 12 interactive calculators from Pool Supply Depot.
Start with Pool Volume and save your gallons. Your saved volume fills in the other calculators when you use the same browser.
Pool Salt Addition Calculator
Calculate the salt needed to move from a measured salinity to your salt system’s target, with pounds, kilograms and bag counts.
Open calculator →Pool Chemical Dosage Calculator
Scale the directions on your exact product label to your pool volume and desired change. This works with different product strengths without assuming a universal dose.
Open calculator →Pool Pump Operating Cost Calculator
Build a daily pump schedule with up to three measured power levels, then compare monthly electricity cost with your current schedule.
Open calculator →Pool Turnover & Flow Rate Calculator
Find the flow needed for your chosen turnover time, or see how many equivalent pool volumes your measured flow processes during a run.
Open calculator →Pool Filter Sizing Calculator
Check flow against a filter’s area and rated limit, then compare four Pentair Clean & Clear Plus sizes.
Open calculator →Pool Heater Operating Cost Calculator
Estimate the cost of one warm-up using natural gas, propane or a heat pump, with your own energy prices and performance assumptions.
Open calculator →Pool Water Replacement Calculator
Estimate dilution needed to lower CYA, salt or calcium hardness, including the level already present in refill water and repeated partial exchanges.
Open calculator →Pool Pipe Flow & Velocity Calculator
Convert flow and actual pipe inside diameter into water velocity. Compare pipe sizes at the same GPM.
Open calculator →Pool Water Filling Cost Calculator
Estimate fill or refill cost from your utility’s rate units, optional sewer charge and measured hose flow.
Open calculator →Pool Heater BTU & Heating Time Calculator
Estimate heating time and temperature rise, compare gas and heat pump BTU ratings, and calculate capacity for your warm-up goal.
Open calculator →Pool TDH & Pump Comparison Calculator
Estimate total dynamic head, compare Pentair, Jandy and Hayward pump curves, and view operating flow charts.
Open calculator →Each tool includes its calculation method and assumptions. Need help choosing equipment? Ask Pool Supply Depot.
Pentair Pool and Spa Equipment
Pentair is renowned for its innovative and energy-efficient pool and spa equipment. From pumps to heaters, Pentair offers a range of products designed to enhance your pool experience.
Hayward Pool and Spa Equipment
Hayward is a trusted name in the pool industry, known for its durable and high-performance equipment. Whether you're looking for filtration systems or automation, Hayward has you covered.
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