Privacy Policy

This website does not set first-party tracking cookies. We may use a single session cookie to support basic site functionality (for example, remembering your metric or imperial unit preference). You can block or delete cookies in your browser settings without affecting the calculators — they run entirely in your browser and do not depend on cookies.

Cookies and similar technologies may also be set by our third-party advertising partners when an ad is displayed. These are not set or read by us, and are described under "Advertising" below.

This website displays advertising delivered by Adsterra (the Adsterra ad network) and its advertising partners. Ads are loaded into iframe slots on the page. The creative content of each ad is supplied by third parties; we do not select, review, or endorse individual advertisements.

To deliver, cap, and measure these ads, Adsterra and its partners may collect and process the following categories of data: IP address and coarse location derived from it (typically country or region level); browser type and version, language, and operating system; device type, screen size, and viewport; the URL of the page on which the ad was shown and the referring page; timestamps, impressions, clicks, and frequency-capping records; and cookie-based or device-based identifiers used to recognise a returning browser.

This data is used to serve advertisements, limit how often the same ad is shown, measure campaign performance, and detect invalid or automated traffic. We do not receive, store, or have access to any personally identifiable information from these ad services, and we do not combine advertising data with any other information about you.

You can limit or block advertising cookies through your browser settings (most browsers support per-site cookie blocking), through your device's advertising controls (for example "Allow Apps to Request to Track" on iOS, or resetting the advertising ID on Android), or through industry opt-out tools such as aboutads.info and youronlinechoices.eu. Opting out of personalised advertising does not stop ads from appearing — it means the ads you see are less likely to be tailored to your interests.

Where required by applicable law, such as the GDPR or UK GDPR, our advertising partners rely on your consent or on legitimate interests for the processing described above. You may contact us using the details at the end of this policy to exercise your data protection rights.