Privacy
Short version: what you type stays in your browser, there are no cookies, and we only see aggregated page-view statistics.
What you enter
Your birth date, age, sex and country are used only by code running in your browser to do the calculation. They are not saved (not even in your browser’s storage), not sent to us or anyone else, and not added to the page address. When you close or reload the page they are gone.
Visitor statistics (Cloudflare Web Analytics)
To see how many people use the site and which pages they visit, we use Cloudflare Web Analytics. It sets no cookies, does not use your browser storage or fingerprinting, and does not identify or follow individual visitors. We only see aggregated numbers, such as page views per page, referring sites, countries and device types. A small script from static.cloudflareinsights.com reports each page view to Cloudflare. What you type into the calculators is never included.
Cookies and advertising
This site sets no cookies and uses no tracking pixels or advertising scripts.
Hosting
The site is hosted by Cloudflare. Like any web host, Cloudflare processes technical data such as IP addresses to deliver pages and protect against attacks. See Cloudflare’s privacy policy.
Changes in the future
The site may show ads (for example Google AdSense) in the future. If that happens, we will update this page first and ask for consent where the law requires it.
Contact
Last updated: 2026-10-06