About Us
poolchemcalc.app
poolchemcalc.app
Pool Chemical Calculator is a free, independent tool built to help pool owners get the chemistry right — without needing a degree in chemistry or an expensive service visit.
We built this app because most pool calculators online are either buried inside product brand websites (where the "correct" dose always happens to be more product) or too simplified to be genuinely useful. Our goal is accurate, science-based dosing you can trust.
Our calculator covers all the essential pool chemistry parameters:
All calculations are based on industry standards from the CDC, NSPF (National Swimming Pool Foundation), and PHTA (Pool & Hot Tub Alliance).
Pool Chemical Calculator is designed for homeowners managing their own pools — in the US, UK, Canada, Australia, and anywhere else in the world. The app supports both Imperial and Metric units and is available in English, Spanish, Portuguese, French, and Chinese.
Whether you have a chlorine pool, salt water pool, or a combination system, the calculator adapts to your setup.
Our formulas are based on published industry standards and have been cross-checked against professional pool chemistry references. That said, results are estimates — pool chemistry is affected by many variables including water temperature, bather load, sunlight, and product quality.
Always test your water before and after adding chemicals, follow product label instructions, and never add multiple chemicals simultaneously. See our full Disclaimer for details.
Pool Chemical Calculator is free to use and supported by advertising and affiliate links. When you click a product link and make a purchase on Amazon, we may earn a small commission at no extra cost to you. This helps keep the calculator free for everyone.
We only link to products that are relevant to the calculation result. We are not paid to recommend specific brands.
Pool Chemical Calculator
Free exact dosing — chlorine, pH, alkalinity, shock & CYA