Pool Winterization Calculator
Calculate the chemicals and supplies needed to winterize your pool including shock, algaecide, antifreeze, and cover sizing.
Inputs
gal
ppm
ppm
Results
Shock Chlorine
1.88 lbs
Winter Algaecide24 oz
Pool Antifreeze6 gal
Approx. Cover Size521.2 sq ft
Estimated Chemical Cost$62.72
How to Use This Calculator
- Enter your pool volume in gallons — use the Pool Volume Calculator if needed.
- Input the current chlorine level, pH, and total alkalinity from a recent water test.
- Select pool type: 1 = inground or 2 = above-ground to determine cover sizing.
- Review Shock Chlorine Lbs and Algaecide Oz — add these quantities the evening before closing.
- Check Antifreeze Gallons needed for line protection if you are in a freeze-prone climate.
- Use Cover Size and Total Chemical Cost to prepare your winterization supply list.
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