Why we built PoolDose
Most pool owners have stood in front of a jug of chlorine or a bag of baking soda wondering how much to add. Bottle labels give one generic number, simple charts ignore how your water actually behaves, and a wrong guess means wasted money, irritated eyes or a green pool. We built PoolDose to answer that question precisely, in seconds, for free.
How our calculators work
- Real chemistry. Doses come from the chemistry of each product: available chlorine, molecular weights and the buffering of your water. Our pH calculator models carbonate, cyanurate and borate buffers instead of using a fixed chart.
- Cross-checked. We compare every dose with manufacturer and industry dosing charts and only publish when they agree.
- Recognized ranges. Recommended levels follow CDC guidance for home pools and hot tubs, and widely used industry practice.
- Safety built in. Every chemical calculator recommends adding large doses in stages and retesting, and explains how to handle the product safely.
- Private by design. Calculations run in your browser. If you save "my pool", it is stored only on your device.
Who we are
PoolDose is run by a small independent team. We are not affiliated with any chemical brand and do not sell pool products. The site is free and supported by advertising, which never influences our numbers.
Limitations
Calculators give estimates. Test kits have limited accuracy, products lose strength over time and every pool is a little different. Always follow product labels, add large doses in stages, and retest. For commercial or public pools, follow your local health department's rules.
Found a mistake?
Tell us at hello@pooldosecalculator.com. We review every report and fix errors quickly.