Privacy Policy

Overview

margincalculator.fyi (“we”, “us”) operates a free in-browser calculator. We do not require accounts, do not run server-side analytics, and do not sell personal data.

What we store

All calculations run locally in your browser. We use localStorage to remember your theme (light/dark) and preferred currency. That data never leaves your device.

Cookies & advertising (Google AdSense)

This site uses Google AdSense to display ads. Google and its partners (including the DoubleClick DART cookie) use cookies to serve ads based on a user’s prior visits to this and other websites. Google may use personal data such as IP address, user agent, and approximate location to personalize ads.

You can opt out of personalized advertising by visiting Google Ads Settings or learn more at policies.google.com/technologies/ads.

Third-party vendors

Third-party vendors, including Google, may use cookies to serve ads based on prior visits. We do not control these third-party cookies. Review each vendor’s privacy policy for details.

Children’s privacy

This site is not directed at children under 13 and we do not knowingly collect personal information from them.

Changes

We may update this policy. Material changes will be reflected in the “Last updated” date above.

Contact

Questions? Email hello@margincalculator.fyi.