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Pool & spa calculators

Pool volume and chemical doses, using standard pool-chemistry formulas.

• Pool Volume CalculatorGallons of water in a rectangular, round, oval or kidney pool — the number every chemical dose depends on.
• Pool Chlorine CalculatorHow much liquid chlorine, bleach or cal-hypo raises free chlorine to your target.
• Pool Salt CalculatorPounds and bags of salt to reach your salt chlorine generator's target level.
• Pool Alkalinity CalculatorPounds of baking soda (sodium bicarbonate) to raise total alkalinity.