Pool Chlorine Dosing Guide — How Much Chlorine to Add | PoolDose

Complete guide to chlorinating your pool. Learn ideal free chlorine levels, how to dose liquid, granular, or tablet chlorine, and how to test pool water.

How to Use the Chlorine Calculator

Enter your current and target free chlorine levels to calculate the required dose. The ideal free chlorine range is 1-3 ppm (or 2-4 ppm if your CYA is 30-50 ppm).

Liquid chlorine (sodium hypochlorite 10-12%) acts fast but has a short shelf life. Granular chlorine provides more precise dosing and longer storage.

Chlorine degrades quickly in direct sunlight and high temperatures. Using CYA stabilizer (30-50 ppm) can significantly reduce chlorine consumption.