How this site handles privacy and personal information.

Northline Calculators Ltd. is the operator of this website.

Privacy enquiries can be sent to privacy@northline-calculators.com. Registered office: London, United Kingdom.

Most calculators work without accounts or saved profiles. Basic technical data such as browser type, device information, page requests, and error logs may still be collected to keep the service available and secure.

If you contact the site directly, the information you include in your message may be stored so the enquiry can be answered and the site can be improved.

Information is used to operate the site, diagnose issues, review calculator accuracy, improve navigation, and respond to user messages.

Personal information is not sold as a standalone data product and is only used in ways that are reasonably connected to operating and improving the site.

This site may use cookies or similar technologies for analytics, performance monitoring, and basic preference storage.

If advertising, analytics vendors, or consent requirements change, this page should be updated so the live policy stays accurate.

Depending on where you are located, you may have rights to request access to, correction of, or deletion of personal information that can be linked to you.

If you have a privacy question or want to make a rights request, contact privacy@northline-calculators.com.