Privacy Policy

Last updated: June 2026.

What we collect

The calculators run in your browser and do not transmit the numbers you enter. We don't require accounts and we don't sell personal data.

Analytics

We may use privacy-respecting analytics to count page views in aggregate.

Advertising

This site is supported by advertising. Third-party vendors, including Google, use cookies to serve ads based on prior visits. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this and other sites. You can opt out of personalized advertising via Google Ads Settings.

Affiliate links

Some outbound links are affiliate links; we may earn a commission at no extra cost to you. See the disclaimer.

Contact

Questions about privacy: [email protected].