Privacy
Your calculator inputs stay in your browser.
The current version does not require an account and does not send calculator inputs to a Household Lab database.
Plain-language policy
Calculator values are processed on your device to update the result. We do not currently provide account storage, uploads or personalized advertising.
Standard hosting infrastructure may process technical request information needed to deliver and secure the site. If analytics, advertising or affiliate links are introduced, this page will be updated before those features are enabled.
Last updated: July 10, 2026.