A calculator that can mind its own business.

Effective July 20, 2026

Calculator inputs

Your detergent, washer, load and cost inputs are calculated in your browser. This site does not operate a custom database that receives or stores those inputs.

Saved profiles

If you choose “Save my usual setup,” the profile is stored in your browser using local storage. You can remove it by using Reset and clearing site data in your browser. It does not automatically sync to another device.

Shared links

If you copy a shareable setup, the link includes non-price calculator selections such as detergent type, label amount, load, soil, water and washer. Anyone with that link can see those selections. Package price and current-use amounts are not included.

Analytics and advertising

The launch version does not intentionally load display advertising. If privacy-respecting traffic measurement or advertising is enabled, this policy will be updated before or when the technology is added. Third-party services may process technical information such as IP address, browser, device and page interactions under their own terms.

Data choices

You can use the calculator without an account. Browser settings can block or remove local storage. If consent controls are introduced for analytics or ads, they will be presented where required.

Contact

Privacy questions can be sent to hello@howmuchdetergent.com.