Your information,
clearly explained.
How this website handles what you enter. Updated: 13 September 2026.
Planning inputs
Calculator inputs are processed only in the open page. They are not saved in browser storage or on a server.
Enquiry drafts
Your name and contact details are optional. The website does not send the draft. Opening email passes the draft to your email app, where you decide whether to send.
Downloaded files
Downloaded CSV and TXT files stay on your device. Store them carefully and delete them when no longer needed.
Cookies and analytics
The website’s own code uses no cookies, localStorage or visitor analytics. The hosting provider may use security cookies and keep ordinary access logs.
External links
External websites apply their own privacy practices. An email you send is handled by the recipient and your email provider.
Sensitive information
Do not enter PINs, passwords, one-time codes, ID copies or confidential account information.