Privacy policy
What we collect
Calculators run entirely in your browser. The numbers you type are not sent to our servers. They may appear in your browser's address bar so you can bookmark or share a result.
Our hosting provider keeps standard server logs (such as IP address, browser type and pages requested) for security and reliability. We may use privacy-focused, cookie-free analytics to count visits.
Advertising
We may show ads to keep the calculators free. If we do, third-party vendors, including Google, may use cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads based on visits to this site and other sites. You can opt out of personalized advertising at Google Ads Settings or aboutads.info. Visitors in the EEA, UK and Switzerland will be asked for consent before any advertising cookies are set.
Your rights
Depending on where you live (for example under the GDPR or US state privacy laws such as the CCPA), you may have rights to access, delete or opt out of the sale or sharing of personal data. Contact us to make a request.