Pool Tools & Calculators
Free, practical tools for every pool owner — measure your water volume, dose chlorine and salt precisely, size a heater and pump, and balance your water chemistry, all in one place.
🏊 Pool Volume Calculator
Find how many gallons your pool holds from its shape and dimensions — round, rectangular, or oval — in US gallons, cubic feet, and litres, the number every chemical and equipment decision starts from
🧪 Chlorine Dosing Calculator
Work out exactly how much chlorine to add to raise your free chlorine to target — for liquid chlorine, cal-hypo, dichlor, or trichlor — based on your pool volume and current reading
🌊 Pool Salt Calculator
Calculate how much salt to add to reach your chlorine generator's ideal salinity — results in pounds, kilograms, and 40-lb bags from your volume and current level
♨️ Pool Heater BTU Calculator
Estimate the heat energy needed to warm your pool by a given number of degrees, and how many hours a heater of a certain output will take — the key to sizing a heater and planning warm-up time
🔵 Pump Turnover Calculator
Get the pump flow rate you need for a target turnover, or the hours your pump takes to circulate the whole pool once — so you can size a pump or set your daily run time
⚗️ Pool Water Balance Calculator
Check whether your water is balanced, corrosive, or scale-forming with the Langelier Saturation Index — from your pH, alkalinity, calcium hardness, temperature, and TDS