Free pool calculators for your website
Put a working pool gallon calculator or pool chlorine calculator on your own website: two lines of code, free, no sign-up, no ads and no cookies. Made for pool service companies, pool stores and pool blogs whose customers ask “how many gallons is my pool?” and “how much chlorine do I add?”.
Pool gallon calculator
Gallons and litres for a rectangle, round or oval pool, flat or sloped floor, as you type. Same math as our pool gallon calculator, tested on every build.
Embed code
Site does not allow scripts? Use the iframe version
Pool chlorine calculator
How much liquid chlorine, bleach, cal-hypo, dichlor or trichlor raises free chlorine to the target. Same math as our pool chlorine calculator, tested on every build.
Embed code
Site does not allow scripts? Use the iframe version
How it works
The script draws the calculator in its own sealed box, so your site’s styles cannot break it and it cannot change your page. Text colour follows your page, so it reads on light and dark themes. It stores nothing, sets no cookies and sends nothing anywhere: the numbers your visitors type stay in their browser.
Terms
Free for any website, including commercial ones. Keep the credit line (“Pool gallon calculator by Calculate Pool” or “Pool chlorine calculator by Calculate Pool”) visible under the calculator and do not change the calculator itself. The results are estimates for pool owners: test the water before adding chemicals and follow the product label. We may update the math and look; your embed updates by itself. Questions or a calculator you would like as a widget: info@calculatepool.com.