Privacy Policy

What we collect

The calculators on this site run entirely in your browser. The numbers you type are never sent to our servers and are never stored by us. If you copy a shareable link, your inputs are encoded into that URL — so treat a shared link as public, and do not share one containing figures you would rather keep private.

Advertising

This site displays advertising served by Google AdSense. Google and its partners may use cookies and 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 visit to this site and other sites on the internet.

You can opt out of personalised advertising by visiting Google Ads Settings, or opt out of third-party vendor cookies at aboutads.info.

Consent in the EEA and UK

If you are in the European Economic Area or the United Kingdom, we ask for your consent before setting advertising cookies, through a consent management platform. You can change or withdraw that consent at any time using the privacy settings control in the site footer.

Analytics

We use privacy-respecting analytics to understand which calculators people use, measured in aggregate. We do not attempt to identify individual visitors.

Your rights

Depending on where you live, you may have the right to access, correct, or delete personal data held about you, and to object to processing. Because the calculators do not transmit your inputs to us, in most cases we hold no personal data about you beyond aggregate analytics and whatever our advertising partner collects under its own policy.

Changes

We will update this page if our practices change, and the date of the most recent change will be shown here.