Privacy Policy

Short version: the numbers you type into calculators stay in your browser. We only keep what you choose to give us.

Last updated June 2026

What we collect

Our calculators run on your device. The values you enter are not sent to us and are not stored on our servers. We collect personal information only when you give it to us, which happens in two cases: when you subscribe to the newsletter (your email address) and when you use the contact form (your name, email and message).

What we do with it

  • Send the newsletter you signed up for. Every email has an unsubscribe link.
  • Reply to messages you send through the contact form.
  • Look at anonymous, aggregated traffic so we know which tools to improve.

We do not sell your data, and we do not share it with advertisers.

Cookies and analytics

We may use privacy-friendly analytics to count visits and see which pages are popular. These do not identify you personally. You can block cookies in your browser settings without breaking the calculators.

Your choices

You can unsubscribe from emails at any time, and you can ask us to delete the information you have shared. Just send the request through our contact page.

Questions

If anything here is unclear, reach out on the contact page and we will explain.