Pool Calculators
Start with gallons. Salt, chlorine, and shock all use that volume. Pump flow and heater size use it too.
Pool Volume Calculators
One page covers rectangle, circle, and oval. A kidney factor is not verified, so it is not a separate shape.
Pool Chemical Calculators
Salt is per salt system. Shock is breakpoint chlorination only. The chemical page compares readings with cited ranges and does not invent a pH dose.
Pool Equipment Calculators
Enter the turnover hours and the temperature rise yourself. A home turnover default and a wind-loss factor are not verified.