Privacy Policy

Last updated: 20 August 2026

Calculator inputs

Our calculators run entirely in your browser. The prices, costs, weights, dimensions and revenue figures you enter are processed on your own device to produce a result. They are not transmitted to us and are not stored on any server. The same applies when a calculator is embedded on another site through our widgets.

Analytics

We use Google Analytics to count visits and see which tools are used, in aggregate. This tells us how many people opened a page, not who they are.

Advertising and cookies

This site displays ads served by Google AdSense. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites. You can opt out of personalised advertising in Google's Ads Settings, or opt out of third-party vendor cookies at aboutads.info. Ads are not shown inside the embeddable widget view.

Messages you send us

If you use the form on our contact page or the feedback box on a tool page, we receive what you type — the message, the page it was sent from, and your email address if you chose to give one — solely so we can check the report and reply. Submissions are delivered to us through Web3Forms. We do not sell personal information.

Changes

We may update this policy as the site changes. Material changes will be reflected in the date above.