Privacy policy

Last updated: 2026-10-26

What we collect

Nothing you type into a calculator is transmitted to us. All calculations run in your browser, in JavaScript, on your own device. The prices, costs and profit targets you enter never leave the page and are not stored.

Analytics

We may collect aggregate, anonymised usage data — page views, referring sites, device type — to understand which calculators are useful. This data is not linked to an individual and does not include anything you entered.

Advertising

This site may display advertising served by third-party networks, including Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this site and other sites on the internet.

You can opt out of personalised advertising by visiting Google Ads Settings, or opt out of third-party vendor cookies at aboutads.info.

Cookies

We do not set first-party cookies for tracking. Advertising and analytics partners may set their own cookies, subject to their policies.

Contact

Questions about this policy: contact us.