Privacy policy
The short version: the numbers you type into a calculator never leave your browser. There is no server to send them to. This site is static files, and every calculation runs in JavaScript on your own device.
What is stored on your device
Each calculator saves your most recent inputs in your browser's localStorage so the page
remembers them next time. That data stays on your device, is readable only by this site, and is deleted when
you clear your browser data or press Reset on the calculator. It is never transmitted.
What we collect
No analytics are currently running on this site. Standard server logs at our hosting provider record IP addresses and user agents for security and abuse prevention, as they do for every website.
Advertising
This site displays ads through Google AdSense. Google and its partners may use cookies to serve ads based on your prior visits to this and other websites. You can opt out of personalised advertising at Google Ads Settings, and control third-party vendor cookies at aboutads.info.
Affiliate links
This site does not currently use affiliate links.
Your rights
We hold no personal data about you ourselves — there is no account, no server, and no database on this site. Our advertising partner does process data about your visit, and rights over that data are exercised through Google rather than through us: see Google's privacy policy and My Ad Center to see, change, or turn off personalised advertising. If you are in the EU, UK, or California and want to reach us directly, use the contact page and we will respond within 30 days.
Children
This site is aimed at people running businesses and is not directed at children under 13. We do not knowingly collect information from children.
Changes
Material changes to this policy will be reflected in the "last updated" date below and, where the change affects what is collected, announced on the site.
Last updated