Last updated October 12, 2026. Draft for review before launch.
What we collect
We do not ask you to create an account and we do not sell personal information. We collect basic usage data to understand which pages are useful:
- Cloudflare Web Analytics counts page views without cookies and without tracking you across sites.
- Google Analytics 4 records page views and clicks on outbound and affiliate links, plus general calculator use (inputs are grouped into ranges, not stored exactly). Google may set cookies to do this.
Affiliate links
When you click a retailer link and visit their site, that retailer or its affiliate network may set a cookie so they can credit us for a sale. Their privacy policies apply on their sites. See our affiliate disclosure.
Calculators
Our calculators run in your browser. The numbers you type are not sent to us. Learn more on thetools page.
Your choices
You can block or delete cookies in your browser settings, or use Google's opt-out browser add-on for Google Analytics. If you contact us by email, we use your address only to reply.
Contact
Questions about privacy: contact us.