Calculator inputs
Values you type into the calculators are processed in your browser and are not sent to our server.
Contact messages
If you use the contact form we store your name, email address and message so that we can reply. Ask us if you want them deleted.
Cookies and local storage
We use a session cookie for the contact form and the admin area, and your browser’s local storage to remember a light or dark theme choice.
Advertising
If advertisements are shown, advertising partners such as Google AdSense may use cookies to personalise ads. You can manage this in your ad settings.