calcs.homes
calcs.homes
Pick a chemical, enter your current and target test-kit reading, and we'll calculate exactly how much to add — one calculator for chlorine, alkalinity, calcium, stabilizer, and salt.
Estimate only — add gradually, circulate, and retest before adding more.
Every pool chemical follows the same core formula: (target ppm − current ppm) × pool volume × a dosing constant specific to that chemical and product strength. We size each chemical's constant from standard pool-industry dosing charts. Always add chemicals gradually, run the pump to circulate, and retest before adding more — actual demand varies with water chemistry and product concentration.
This page covers every chemical in one place. If you already know which one you need, calcs.homes also has a dedicated page for each — pH, salt, alkalinity, chlorine, stabilizer, and calcium hardness — with more specific product guidance.
Dosing charts assume average conditions — water temperature, existing stabilizer levels, and product concentration all shift real-world demand. Treat the result as a starting dose, then retest.