Privacy Policy

Last updated: March 2026

Calculator Data

All calculations are performed entirely within your web browser. No calculator inputs or results are transmitted to any server. When you use the Save feature, your inputs are stored in your browser's localStorage — a storage area on your device that only this website can access. You can clear this data at any time by clearing your browser data or clicking Reset in the calculator.

Analytics

We use Google Analytics 4 to collect anonymous usage statistics such as page views, approximate location (country/city level), device type, and browser. This data helps us understand how the site is used and improve it. Analytics tracking is subject to your consent via our cookie consent banner and respects Google Consent Mode v2.

Advertising

We use Google AdSense to display advertisements. AdSense may use cookies to serve personalised ads based on your browsing history (if you consent) or contextual ads (if you decline personalisation). Ad serving is subject to Google's privacy policy. We display a consent banner allowing you to manage your advertising preferences.

Contact Form

Our contact form uses EmailJS to send your message directly to our email inbox. EmailJS processes the message in transit but does not store it. We do not maintain a separate database of contact form submissions. The information you provide (name, email, message) is used solely to respond to your enquiry.

Cookies

We use essential cookies for site functionality and, with your consent, analytics and advertising cookies as described above. You can manage your preferences at any time by clicking "Manage Privacy" in the footer.

Your Rights

Under UK GDPR, you have the right to access, correct, or delete your personal data. Since we don't store calculator data on our servers, there is nothing to delete on our side. For analytics data, you can opt out via the consent banner. For any privacy enquiries, please contact us through our contact page.