Pool & Spa
Pool and spa calculators for pool volume, chemical dosing, heater sizing, pump sizing, salt systems, and operating costs.
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Pool Volume Calculator
Calculate pool water volume in gallons for rectangular, round, and oval pools based on dimensions and depth.
Pool Chemical Dosing Calculator
Calculate the amount of acid, chlorine, and baking soda needed to adjust pool pH, chlorine, and alkalinity levels.
Pool Heater Sizing Calculator
Size a pool heater based on pool volume, temperature rise, surface area, and wind exposure using BTU calculations.
Pool Pump Sizing Calculator
Size a pool pump based on turnover rate, pipe friction loss, and total dynamic head with energy cost estimates.
Salt System Sizing Calculator
Calculate the salt needed to reach target levels and determine the correct salt chlorinator cell size for your pool.
Pool Cost Estimator
Estimate the total cost of building a concrete, fiberglass, or vinyl liner pool including excavation, shell, equipment, and decking.
Hot Tub Operating Cost Calculator
Calculate monthly and annual hot tub operating costs based on heating loss, pump usage, and electricity rates.
Pool Leak Detection Calculator
Use the bucket test method to determine if your pool is leaking and calculate the leak rate in gallons per day.
Pool Winterization Calculator
Calculate the chemicals and supplies needed to winterize your pool including shock, algaecide, antifreeze, and cover sizing.
Water Feature Flow Calculator
Calculate pump size, pipe diameter, and flow rate for waterfalls, fountains, and sheer descent water features.