Privacy policy

Last updated September 29, 2026.

Information you enter

Calculations run entirely in your browser. The numbers you type are not sent to or stored on our servers. If you use the Share button, your inputs are placed in the link you share. Your light or dark theme choice is saved in your browser only.

Advertising and cookies

We use Google AdSense to show ads. Third-party vendors, including Google, 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 your visits to this site and/or other sites on the internet.

You can opt out of personalized advertising at Google Ads Settings, or opt out of some third-party vendors' use of cookies at aboutads.info. Learn more about how Google uses data from partner sites.

Analytics

We may use analytics tools to understand how visitors use the site, such as which pages are most popular. This data is aggregated and does not identify you personally.

Your rights

Depending on where you live (for example California under the CCPA, or the EU and UK under the GDPR), you may have rights to access, delete or opt out of the sale or sharing of personal information. Contact us at [email protected].

Children

This site is not directed to children under 13, and we do not knowingly collect their information.