Pool Chemical Dosing Calculator
Calculate the amount of chlorine or other chemicals to add to your swimming pool based on volume and desired concentration change.
Liquid Chlorine (12.5%)
4,992.0 fl oz
Liquid Chlorine (12.5%) vs Pool Volume
Formula
## Pool Chlorine Dosing Maintaining proper chlorine levels (1-3 ppm for residential pools) requires calculating the right dose based on pool volume and current levels. ### Simplified Dosing **Liquid Chlorine (12.5% sodium hypochlorite)**: ~1.3 mL per gallon per 1 ppm increase **Granular Chlorine (65% calcium hypochlorite)**: ~0.24 grams per gallon per 1 ppm increase Always add chemicals to water, never water to chemicals. Add in the evening when UV degradation is minimal.
Esempio Risolto
A 15,000-gallon pool needs chlorine raised from 1 to 3 ppm.
- 01PPM increase = 3 - 1 = 2 ppm
- 02Liquid chlorine = 15,000 x 2 x 0.0013 x 128 = 4,992 fl oz = ~39 fl oz
- 03Granular chlorine = 15,000 x 2 x 0.00024 x 16 = 115.2 oz = ~7.2 oz
Domande Frequenti
What is the ideal chlorine level?
Residential pools: 1-3 ppm free chlorine. Hot tubs: 3-5 ppm. Below 1 ppm risks bacterial growth; above 5 ppm can irritate skin and eyes.
Why does my chlorine disappear?
UV sunlight destroys chlorine rapidly. Use cyanuric acid (stabilizer) at 30-50 ppm to protect chlorine. Heavy bather load and organic debris also consume chlorine.
How do I calculate pool volume?
Rectangular: Length x Width x Avg Depth x 7.5 gallons. Round: Diameter² x Avg Depth x 5.9 gallons. Oval: Long Diameter x Short Diameter x Avg Depth x 5.9.
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