Water Softener Size Calculator

Start from what you actually have. A home test counts as a measurement with its test date, where you took the sample and how you tested.

A ZIP places the home. It never stands in for a test.

Only if you know it. A meter reading of softened water counts for more than household size.

Choose how many days you’d like between regenerations. We show the capacity that scenario would need. There is no right answer: a shorter interval means more regenerations, and a longer one needs more capacity.

Each one you answer lets a softener’s rows use it. Unanswered stays unknown.