Privacy Policy

The short version

• The numbers you type into a calculator stay in your browser. We do not transmit or store them on our servers.
• You do not need an account to use any tool on the Site.
• We do not sell your personal information.
• We use limited, privacy-respecting analytics to understand which pages are useful.

Information we collect

Calculator inputs. The values you enter into our calculators are processed locally in your web browser to produce a result. These inputs are not sent to us and are not stored on our servers.

Usage data. Like most websites, our hosting provider and any analytics we use may automatically record standard technical information such as your approximate location (derived from IP address), browser type, device type, the pages you view, and the referring page. This data is aggregated and used to keep the Site fast, secure, and useful.

Messages you send us. If you contact us by email, we receive the information you choose to share (such as your email address and the contents of your message) so we can reply.

Cookies and local storage

The Site may use cookies or your browser's local storage for essential functions—such as remembering a preference (for example, units like miles or kilometres) so you don't have to set it again. Analytics or advertising partners, where used, may also set cookies. You can block or delete cookies through your browser settings; the calculators will continue to work, though some preferences may not be remembered.

Analytics and advertising

We may use third-party services (for example, a privacy-focused analytics provider) to understand aggregate traffic patterns. If we display advertising, ad partners may use cookies or similar technologies to serve and measure ads. These third parties operate under their own privacy policies. We encourage you to review the policies of any third party whose content appears on the Site.

How we use information

• To operate, maintain, and improve the Site and its calculators.
• To understand which tools and articles are helpful.
• To keep the Site secure and to prevent abuse.
• To respond to messages you send us.

Children's privacy

The Site is intended for a general audience and is not directed at children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us with personal information, please contact us and we will delete it.

Your choices and rights

Depending on where you live, you may have rights to access, correct, or delete personal information we hold about you, or to opt out of certain processing. Because we collect so little, in most cases there is no personal data tied to you. To make a request, contact us using the details below and we will respond as required by applicable law.

Changes to this policy

We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date at the top of this page. Significant changes will be reflected here, so please check back periodically.

Contact us

Questions about this policy? Reach us through our contact page.