Pool calculators
Start with your pool's volume. Then test the water and pick the calculator for whatever needs adjusting. Each one shows the formula behind the result.
Pool volume calculator
Gallons and liters for rectangular, round, oval and kidney pools.
ChlorinePool chlorine calculator
Dose of liquid chlorine, bleach, cal-hypo, dichlor or trichlor.
ChlorinePool shock calculator
The shock level for your stabilizer and how much product it takes.
BalancePool pH calculator
Muriatic acid, dry acid or soda ash dose, using your alkalinity.
BalanceTotal alkalinity calculator
Baking soda to raise it, or acid to lower it.
SaltPool salt calculator
Pounds and bags of salt for a saltwater pool.
ChlorineStabilizer (CYA) calculator
How much cyanuric acid to add, and the chlorine level it needs.
BalanceCalcium hardness calculator
Calcium chloride to add, or how much water to replace.
BalanceLSI (saturation index) calculator
Is your water corrosive, balanced or scale-forming?
WaterDrain and refill calculator
How much water to replace to lower CYA, calcium or salt.
EquipmentPool heater size calculator
BTU needed, using the US Department of Energy method.
EquipmentPump turnover calculator
Flow rate (GPM) for your turnover time.
Not sure what to adjust first? See the ideal pool chemical levels chart, which explains the order.