Last updated: October 8, 2026
Our calculators run inside your own browser. The numbers you type are not sent to us and not stored. We do not ask you to sign up, and we do not sell personal information.
Using a calculator collects nothing about you. If you email us, we see the email address and message you send, and we use them only to reply to you.
This website itself does not set tracking cookies. If advertising is added later (see below), advertising partners may set their own cookies, as described in the next section.
We may show ads in the future through Google AdSense to keep the calculators free. If we do, Google and its partners may use cookies to show ads based on your visits to this website and other websites. You can turn off personalized ads in your Google Ads Settings, or opt out of third party cookies at aboutads.info. This page will be updated when advertising starts.
This website is made for a general audience doing home projects. It is not directed at children under 13.
If this policy changes, the new version will be posted on this page with a new date at the top.
For any question about this policy, write to us through the Contact page.