The Pool Drain Percent Calculator app is used to calculate the percent or fraction of water to be drained to reach a Target for a specific condition in the water.

This is the best app for calculating the percent of water to be drained from a pool of any type (salt, chlorine, and acid) or condition (high or low concentration of a specific chemical).

The app is very easy to use. It has a simple interface and a user-friendly design.

The user can choose the source and target conditions from a list.