Pool calculators
Free, no signup, everything runs in your browser.
Pool Volume Calculator
Gallons and liters from your pool shape and dimensions. The number every dose depends on.
Pool Chlorine Calculator
Exact chlorine to add for liquid, bleach, cal-hypo, or dichlor, with FC/CYA targets.
Pool Salt Calculator
How many pounds and bags of salt to reach your target for a saltwater pool.
Cyanuric Acid Calculator
How much stabilizer to add to bring CYA into range, in ounces and pounds.
Pool Alkalinity Calculator
Baking soda to raise total alkalinity, or muriatic acid to lower it.
Calcium Hardness Calculator
How much calcium chloride to bring hardness into range, dihydrate or anhydrous.
Pool pH Calculator
Muriatic acid to lower pH or soda ash to raise it, using the carbonate buffer model.
Pool Shock Calculator
The SLAM shock level for your CYA and the chlorine to reach it.
Saturation Index Calculator
Your LSI water balance: corrosive, balanced, or scaling, corrected for CYA.
Coming soon
- Pump size calculator
- Heater BTU size calculator
- Pool resurfacing cost estimator