Privacy Policy

Last updated: 5 June 2026

Overview

Trefid provides free online calculator tools. The site does not provide user accounts or backend forms, and we do not ask visitors to create a profile to use the calculator.

Information you choose to send

If you contact Trefid by email, we receive the information included in your message, such as your email address, name if provided, and the content of your enquiry. We use that information to respond to your message and keep basic correspondence records.

Cookies, analytics, and advertising

Trefid may use cookies, analytics, and advertising technologies to understand site usage, improve the calculators, and support the service. If Google AdSense or other Google advertising services are used on Trefid, Google and its partners may use cookies or similar technologies to serve and measure ads.

For more information about how Google uses information from sites or apps that use its services, visit Google's partner sites policy.

Consent choices

For visitors in the European Economic Area, the UK, or Switzerland, Trefid will use a Google-certified consent management platform where required before serving ads that require consent. Consent settings may affect whether personalised or non-personalised ads are shown.

External links

Trefid may link to external websites for reference. We are not responsible for the privacy practices or content of those websites.

Changes to this policy

We may update this policy as Trefid adds tools, analytics, advertising, or other site features. The latest version will be published on this page.

Contact

For privacy enquiries, contact hello@trefid.com.