Pool chemistry calculators
Enter your test results and your gallons, and get the amount of each product to add, in the order to add it, in cups, ounces, pounds or bags.
Test results and dosing
Water balance
LSI Calculator
Enter pH, total alkalinity, calcium hardness and temperature, and see whether your water is corrosive, balanced or scaling, and what to change first.
Pool Calcium Hardness Calculator
Enter your pool size and calcium hardness reading, pick your surface, and get the pounds of calcium chloride to add or the share of water to replace.
Pool Alkalinity Calculator
Enter your gallons and total alkalinity to get the baking soda or acid needed to reach your target, in parts small enough to retest between.
Pool pH Calculator
Enter pH now, your target, alkalinity and CYA to get the acid or soda ash dose, the alkalinity it will use, and how much TA changes the answer.
Muriatic Acid Pool Calculator
Choose your acid strength and whether you are lowering pH or alkalinity, and get the amount to pour, split into safe additions.
Salt pools
Chlorine
Pool Shock Calculator
Pick routine shock, SLAM or algae, enter your gallons, free chlorine and CYA, and get the amount of shock, what it does to calcium and CYA, and when to stop.
Pool Chlorine Calculator
Enter your gallons, free chlorine and CYA to get the chlorine target, the amount to add in gallons, ounces or litres, and the daily top-up.
Pool Stabilizer Calculator
Raise CYA with stabilizer or work out how much water to replace to bring it down, and see how the change moves your free chlorine and SLAM levels.