Pool & spa care, calculated
Working calculators that show their math — volume, chlorine & shock dosing, water balance, and pump sizing — plus a real filter-cartridge cross-reference.
Every tool you need
Pool Volume
Gallons for rectangle, round & oval pools.
Chlorine & Shock
Exact dose to hit a target free-chlorine ppm.
pH & Balance
pH, alkalinity, CYA & calcium hardness.
Pump & Filter
Required flow and minimum filter size.
Cartridge Finder
18+ cartridges cross-referenced.
Chlorine by Size
Dosing guides for common pool volumes.
Why PoolCareCalc
Most pool advice online is vague. Our calculators are built on standard pool-chemistry relationships and show the arithmetic, so you can trust the dose and learn the why. Start from your pool’s volume, test your water, then dose chlorine and balance chemicals to their ideal ranges. When a filter cartridge wears out, the cross-reference finds the OEM part and its cheaper Pleatco / Unicel / Filbur equivalents.
These tools give estimates from published formulas — always test your water and add chemicals gradually. See our methodology for every formula and assumption.
Popular robotic pool cleaners
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Wi-Fi robotic vacuum for in-ground pools up to 50 ft. Scrubs floor and walls; top-load filter basket.
View on AmazonCordless robot that cleans floor, walls and waterline with surface-parking and double-pass scrubbing.
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