Last updated: 1 November 2026
Information you enter
Numbers you type into our calculators are processed in your browser. We do not send them to our servers or store them.
Log and analytics data
Like most websites, our hosting provider may record standard log data such as IP address, browser type, pages visited and time. If we use analytics, it is used to understand traffic and improve the site.
Cookies and advertising
We may show ads served by Google AdSense. Google and its partners use cookies to serve ads based on your visits to this and other websites. You can manage personalised advertising in Google Ads Settings or learn more about how Google uses data at policies.google.com/technologies/partner-sites.
Third-party services
This site loads fonts from Google Fonts. Those requests are handled under Google's privacy policy.
Children
The site is not directed to children under 13 and we do not knowingly collect their personal information.
Your choices
You can block or delete cookies in your browser settings. Doing so does not stop the calculators from working.
Changes and contact
We may update this policy and will change the date above when we do. Questions: see our contact page.