Privacy Policy

Effective October 29, 2026

Calculations run entirely in your browser. The numbers you type are not sent to or stored on our servers.

Analytics

We use Cloudflare Web Analytics, which does not use cookies, to count visits. We may also use Google Analytics, which uses cookies to collect information such as pages visited, device type and approximate location. See how Google uses data from sites that use its services.

Advertising

In the future we may show ads from third-party vendors, including Google. These vendors may use cookies to serve ads based on your visits to this and other websites. You can opt out of personalized advertising at Google Ads Settings or aboutads.info. Where required by law (for example, in the EEA/UK or some US states), we will ask for your consent or offer an opt-out.

Cookies

You can block or delete cookies in your browser settings. The calculators still work without cookies.

Children

This site is not directed to children under 13.

Changes

We will post updates on this page.

Contact

See our contact page.