Pool Care Calculators & Tools
Free, practical tools for backyard pool chemistry and upkeep — measure your volume, dose chlorine and balance pH, size your pump run time, dial in your salt system, and budget for heating.
Pool Volume Calculator
Estimate how many gallons or liters are in your pool from its shape and dimensions — rectangular, round, or oval — the starting point for every dosing calculation
Chlorine Dosing Calculator
Work out how much liquid chlorine, cal-hypo, or dichlor to add to raise your free chlorine to a target ppm, based on your pool volume and the product's strength
pH & Alkalinity Balance Calculator
Estimate how much soda ash, muriatic acid, or baking soda to add to move your pH or total alkalinity toward its target range
pH & Alkalinity Balance Order
Both readings off at once? Every pool chemical moves pH and alkalinity together, so this gives the order to add them in, what each step leaves the other reading at, and when aeration is the only thing that works
Pump Run-Time Calculator
Work out how many hours a day to run your pump for a full water turnover, from your pool volume and the pump's flow rate, plus an optional energy-cost estimate
Salt Calculator
Work out how many pounds of pool salt to add to reach your salt-water chlorinator's target ppm, from your pool volume and current reading
Pool Heater Running-Cost Estimator
Estimate the run time and fuel or electricity cost to heat your pool to a target temperature, for gas heaters, heat pumps, and resistance heaters
Pool Size Reference
Compare seven common pool sizes side by side — gallons, a chlorine dose, an alkalinity adjustment, and a pump's turnover time, all from the calculators above