Chlorine · free
Pool chlorine calculator
Type your pool gallons, today’s free chlorine and the level you want. You get the dose of the product you have.
Liquid chlorine to add
41.0FL OZ
Granular product to add
0.0OZ BY WEIGHT
1 ppm is 1 mg per liter. The grams of available chlorine = gallons × 3.785 × (target − reading) ÷ 1,000, then divided by the strength on the label: 10.24 fl oz of 12.5% liquid per ppm per 10,000 gallons.
Strengths from the labels: cal-hypo at least 65% and dichlor 56% available chlorine (EPA-registered labels). Follow the label of your product.