Privacy policy

Last updated: 1 November 2026

This policy explains what information CalcTen ("we", "us") collects when you use https://calcten.com, how it is used, and your choices. The data controller is Rashid Mehmood, contactable at contact@calcten.com.

Calculator inputs

Our calculators run entirely in your web browser. The numbers you type are not sent to or stored on our servers. Your unit and region preferences are saved in your browser's local storage so the site remembers them; you can clear them at any time through your browser settings.

Information we may collect

• Server logs: our hosting provider may automatically record technical information such as IP address, browser type and pages requested, for security and reliability.
• Emails: if you contact us, we keep your message and email address to reply and to keep a record of the correspondence.
• Cookies and similar technologies: used for advertising and, if enabled, analytics, as described below and in our cookie policy.

Advertising (Google AdSense)

We use, or plan to use, Google AdSense to show ads. Third-party vendors, including Google, use cookies 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 based on your visits to our site and/or other sites on the internet.

You can opt out of personalised advertising by visiting Google Ads Settings. You can learn more about how Google uses information from sites that use its services at policies.google.com/technologies/partner-sites. Users in Europe can also visit Your Online Choices.

Consent (UK, EEA and Switzerland)

Where required by law, we ask for your consent before setting non-essential cookies or showing personalised ads. Until you choose, advertising and analytics storage default to "denied" using Google Consent Mode. You can change your choice at any time using the Cookie settings link in the footer. We intend to use a Google-certified consent management platform for visitors in these regions.

Legal bases

Under the GDPR and UK GDPR we rely on: consent for advertising and analytics cookies; legitimate interests for keeping the site secure and working; and legitimate interests or consent for responding to messages you send us.

Your rights

Depending on where you live, you may have the right to access, correct, delete or restrict use of your personal data, to object to processing, to data portability, and to withdraw consent at any time. To exercise these rights, email us. If you are in the UK you can complain to the Information Commissioner's Office (ico.org.uk); in the EEA, to your local data protection authority. Residents of some US states, such as California, may have additional rights, including to opt out of the "sale" or "sharing" of personal information for targeted advertising.

Retention

We keep emails only as long as needed to deal with your enquiry and for reasonable record-keeping. Cookie lifetimes are described in our cookie policy.

Children

CalcTen is not directed at children under 13 (or 16 where applicable), and we do not knowingly collect their personal data.

International transfers

Our hosting and advertising partners may process data outside your country. Where this happens, they are responsible for using appropriate safeguards such as standard contractual clauses.

Changes

We may update this policy. The date at the top shows when it last changed.