Effective September 12, 2026

Privacy policy

This policy explains the limited information that may be processed when you use this website.

Information you provide

If you contact us, we may receive your email address and the contents of your message. The on-page calculators run in your browser and do not require an account.

Technical information

Hosting and security providers may process routine request data such as IP address, browser type, timestamps, and requested pages to deliver and protect the site. We may use aggregated analytics to understand page performance.

Affiliate links

Amazon and other merchants may receive referral information when you follow an affiliate link. Their privacy terms govern information they collect.

Your choices

You may avoid sending personal information and may control cookies through your browser. Contact us to ask about a message you previously sent.