Privacy Policy

Last updated: 2026-10-04

The short version

We do not collect, store, or see anything you type into our calculators. Every calculation runs entirely in your browser — your numbers never leave your device and never reach our servers.

Information we do not collect

Cookies and similar technologies

We use cookies (or similar local storage) for the following limited purposes:

Advertising and consent (EEA, UK, and Switzerland)

If you visit from the European Economic Area, the United Kingdom, or Switzerland, we ask for your consent before serving personalized ads, using a Google-certified consent management platform. You can change your consent choice at any time via the consent settings on our site.

U.S. state privacy rights

Depending on your state of residence (including California, Colorado, Connecticut, Virginia, and others with privacy laws), you may have the right to know what personal information is collected, to request deletion, and to opt out of the "sale" or "sharing" of personal information. Because we do not collect calculator inputs or account data, the personal information potentially involved is limited to cookie-based identifiers used by our analytics and advertising providers. To exercise rights, contact us via the contact page.

Data security

Since calculator inputs never leave your device, there is no database of your calculations to breach. Standard HTTPS encryption protects all traffic between your browser and our site.

Children

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

Changes to this policy

We may update this policy as the site evolves. The "Last updated" date above will reflect the latest revision.

Contact

Questions about this policy? Reach us through the contact page.