Calculate liquid chlorine or bleach dosing from pool gallons, current free chlorine, target free chlorine, chlorine strength, jug size, and CYA-based shock target.
This tool is part of these guided projects. Each project provides step-by-step instructions with checklists and all the tools you need in one place.
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The calculator estimates how much liquid chlorine is needed to raise free chlorine by the selected ppm change. Chlorine strength adjusts the volume because 6% bleach, 10% pool chlorine, and 12.5% liquid chlorine have different active strength.
fl oz = ppm increase x (pool gallons / 10000) x (128 / chlorine strength %)CYA is used to show a practical shock target band. This is a planning estimate; always retest with a reliable pool test kit before adding more chemicals.
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Enter the current FC reading and the target FC to get the liquid chlorine dose before evening circulation.
Change chlorine strength from 6% to 10% or 12.5% to see how much product volume changes.
A hobbyist enters measurements into the Pool Chlorine Calculator before buying yarn, filament, or resin to avoid mid-project shortages.
Pool gallons matter, but the ppm increase and chlorine strength are what determine the actual amount to add.
Never mix chlorine with acid, ammonia, or other pool chemicals in a bucket or bottle.
Dose pool chlorine without guessing. Enter pool gallons, current free chlorine, target free chlorine, and liquid chlorine strength to get fluid ounces, cups, gallons, and jug equivalents.