Privacy Policy

We do not ask you to create an account and we do not collect the values you enter into the calculators; all calculations run locally in your browser. We use analytics to understand which pages are useful, and we show ads from Google to keep the site free.

Like most websites, our hosting provider and analytics service receive standard technical information when you visit, such as your IP address, browser type, device type, referring page and the pages you view. This information is used in aggregate to measure traffic and improve the site.

We use Google AdSense to display advertisements. Google and its partners use cookies or similar technologies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visits to this site and/or other sites on the Internet.

You can opt out of personalized advertising by visiting Google's Ads Settings (https://adssettings.google.com). You can also learn more about how Google uses data at https://policies.google.com/technologies/partner-sites, or opt out of some third-party vendors' use of cookies for personalized advertising at https://www.aboutads.info.

Visitors in the European Economic Area, the United Kingdom and Switzerland are asked for consent through a consent management platform before personalized ads or non-essential cookies are used.

Some calculators may store your recent inputs or preferences in your browser's local storage so they are still there when you return. This data stays on your device and is never sent to us. You can clear it at any time through your browser settings.

This site is intended for a general and professional audience and is not directed at children under 13. We do not knowingly collect personal information from children.

We may update this policy from time to time; the date at the top shows the latest revision. If you have questions about this policy, contact us at the email address on the Contact page.