Free pool tools
Pool math without the forum ads
The calculators pool techs look up every week, in one clean place. Free, no signup, and fast on a phone at the equipment pad.
LSI Calculator
Langelier Saturation Index with CYA-corrected alkalinity. Corrosive, balanced, or scaling in one tap.
Open calculatorChemical Dose Calculator
Exact ounces of chlorine, muriatic acid, soda ash, baking soda, calcium, stabilizer, and salt.
Open calculatorCYA Drain Calculator
How much water to drain and refill to bring stabilizer, hardness, or salt back down.
Open calculatorPool Volume Calculator
Gallons for rectangle, round, oval, and kidney pools from a tape measure.
Open calculatorWant these readings saved to each customer, with photos and an automatic text to the homeowner?
Try the tech app demo