Privacy Policy
Short version: we collect as little as possible.
What we collect
- Email addresses you give us when you ask us to email your results.
- Basic usage data such as pages visited, collected by our analytics and advertising partners.
- Calculator inputs stay in your browser. They are only shared if you copy a share link yourself.
Why we collect it
To send the results you asked for, to keep the site running, and to understand which calculators people find useful.
Advertising and affiliate links
We show display ads and link to products from affiliate partners. These partners may set cookies. We may earn a commission when you buy through our links, at no extra cost to you.
Your choices
Email us any time to see, correct, or delete the information we hold about you. We never sell your personal data.