Home Improvement & DIY
Pool Chemical Calculator
Exact chlorine dose to hit your target ppm using liquid chlorine, bleach, cal-hypo or dichlor.
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gal
ppm
ppm
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Chlorine to add
32.1 fl oz
Add 32.1 fl oz (0.25 gallons) to raise free chlorine by 2.0 ppm in 15,000 gallons.
Same dose in gal / lbs
0.25 gallons
PPM increase
2 ppm
About this calculator
Standard pool dosing: raising 10,000 gallons by 1 ppm free chlorine takes ~10.7 fl oz of 12.5% liquid chlorine, ~16 fl oz of 8.25% bleach, ~2 oz of 67% cal-hypo or ~2.4 oz of dichlor. Keep free chlorine at 1–3 ppm (higher with high CYA).
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