What it does
Water Softener Sizing is a free worksheet. Enter your household size, water hardness and your own salt and water prices, and it estimates working capacity, regeneration interval and five-year running costs.
Everything runs in your browser. Your entries are not uploaded anywhere.
Method and sources
The method follows Penn State Extension guidance on softener sizing, cited with links at the bottom of the main page.
Who runs it
An independent project. It is not affiliated with the companies or agencies named on the site, and it is free to use.
Accessibility
We aim for this site to be usable with assistive technology (screen readers, keyboard navigation, zoom), in line with WCAG 2.2 AA. If something is hard to use, email us and we will fix it.
Contact
Questions or corrections: EMAIL.