About

poolchemistrycalc is run by one person who got tired of guessing at the side of a pool. Every figure on this site is computed, in the open, from the measurements and readings you type in: the volume from your own dimensions, the dose from the strength printed on the product you are holding.

The target ranges come from state pool codes and from manufacturers' own product pages, and every page says which one and when it was read. Where nothing has been read that states a figure, the site says so and publishes nothing in its place.

This site sells nothing, takes no lead, and recommends no brand. It is not a pool service, a chemist, or a health authority.

This site publishes calculated water volumes and chemical quantities for home pool and spa owners. It is not a health, safety or professional service, and it does not replace the instructions printed on the product you are holding.

Not affiliated with, endorsed by or sponsored by HASA, Pyrock Chemical, Pentair, Hayward, Sonoma Hot Tubs, the Centers for Disease Control and Prevention, or any state health department. Product names are the trademarks of their owners and appear here only to identify the strength of what is in the container.