Free pool tools
Calculators for pool pros & owners
Quick, free tools for the math you do all day. No signup, no catch — built by the team behind Pool Health.
LSI Calculator
Check whether your water is corrosive, balanced, or scaling. Enter pH, temperature, calcium hardness, and alkalinity to get the Langelier Saturation Index instantly.
Open calculatorPool Volume Calculator
Estimate how many gallons your pool holds — rectangle, round, or oval. The number you need to dose chemicals and size equipment correctly.
Open calculatorSalt Calculator
For saltwater pools: enter your current and target salt levels and volume to find out how many pounds — and 40-lb bags — of salt to add.
Open calculatorPump Run-Time Calculator
Find your turnover time and how many hours a day to run the pump, from your pool volume and pump flow rate.
Open calculatorThese tools, on every pool you service
Pool Health tracks chemistry, volume, and equipment per pool, then generates AI service instructions per stop and runs your routes, invoicing, and inventory — $2 per pool per month.
Start free trial14 days free. No credit card required.