Privacy Policy

Last updated 2026-10-17

What the calculators do with your numbers

All calculations run in your browser. The values you type are not sent to us or stored anywhere.

Analytics

We use Cloudflare Web Analytics to count visits and see which pages are popular. It does not use cookies, does not track you across sites, and does not collect personal data. Our host, Cloudflare, also keeps standard server logs (such as IP address and browser type) for security, as described in Cloudflare's privacy policy.

Advertising

We use Google AdSense to show ads that keep the tools free. Google and its partners, as third-party vendors, use cookies to serve ads based on your previous visits to this and other websites. Google's advertising cookies let it and its partners show ads to you based on those visits.

You can opt out of personalised advertising in Google's Ads Settings, or opt out of some third-party vendors' cookies at aboutads.info. Google explains how it uses data from sites that use its services.

If you are in the European Economic Area, the UK or Switzerland, you will see a consent message from Google before any advertising cookies are set, and you can choose to accept, reject or manage them. You can change your choice at any time using the privacy link the message adds to the page.

Videos

Some guides include a video from our YouTube channel. The video only loads when you click play, and it is served from YouTube's privacy-enhanced domain (youtube-nocookie.com). Once you play it, YouTube's own privacy policy applies.

Affiliate links

Some pages may link to products we recommend. If you buy through such a link we may earn a commission at no extra cost to you. Affiliate links are labelled.

Your rights

Because we don't collect personal data ourselves, there is usually nothing for us to access or delete. If you have a question about your data, email [email protected].