Privacy policy

Effective 2026-10-10.

What you type

Every calculation runs in your browser. The numbers and dates you enter are not sent to us or stored by us. If you use "Copy link", your inputs are placed in the link so you can share them; only people you send it to see them.

Hosting logs

The site is hosted on Cloudflare Pages. Like any web host, Cloudflare processes technical data such as IP addresses to deliver and protect the site; see Cloudflare's privacy policy.

Advertising

The site may show ads to stay free. Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this website or other websites. Google's use of advertising cookies enables it and its partners to serve ads to users based on their visit to this site and/or other sites on the Internet. You may opt out of personalized advertising by visiting Google Ads Settings. You can learn more at How Google uses cookies in advertising, and opt out of some other vendors at aboutads.info.

Children

The site is not directed at children under 13 and does not knowingly collect their information.

Changes and contact

We'll update this page if anything changes. Questions: see the contact page.