Privacy

The tools calculate in your browser. The amounts, dates and other data that you type are not sent to the server of this site. This site does not keep them.

This site stores only two settings in your browser. They are not sent to this site.

• Theme (tf-theme): when you choose “Light” or “Dark”, it is stored in localStorage and used the next time. When you choose “System”, it is deleted.
• Power saving (tf-lite): a check if your device needs fewer animations. It is stored in sessionStorage and cleared when you close the tab or the browser.

When ads are off, this site sets no cookies. It loads no third-party scripts, fonts or analytics tools.

The source links on a page open other websites. On those websites, their own privacy policies apply.

If we add an analytics tool in the future, we will update this page first.

Cloudflare provides the web hosting and the email forwarding. Cloudflare can keep normal access logs, for example IP addresses and access times, under its own policy. See the information from that provider.

When you email this site, we receive your email address and your message. Cloudflare forwards the message to the operator's Gmail inbox. We use this data only to handle your message.

This site has no ads at the moment. The pages load no ad or consent management scripts. The rest of this section describes what happens when ads are on.

When ads are on, this site shows ads from Google AdSense. Google and its partners can use cookies or similar technology to show and measure ads.

When ads are on, visitors in the European Economic Area, the UK and Switzerland first see a consent message. Until you choose, no ad cookies are used for personalization. You can change your choice at any time with “Privacy settings” at the bottom of the page.

You can also manage personalized ads on Google's ad settings page. Google ad settings