Privacy Policy

Last updated: October 2026

The short version

Compound Toolbox is a set of free calculators. We don't ask you to sign up, we don't run accounts, and we don't collect your name, email, or any personal information. Everything you type into a calculator stays in your browser — it is never sent to us.

What we collect

Nothing directly. There are no contact forms, no logins, and no analytics scripts of our own on this site today. Calculator inputs are processed locally in your browser via JavaScript and never leave your device.

Cookies

This site itself does not set cookies. If we add third-party services in the future (such as advertising), this policy will be updated to describe them.

Third-party advertising

We plan to show ads via Google AdSense to keep these tools free. Google may use cookies to serve ads based on your prior visits to this and other websites. You can opt out of personalized advertising by visiting Google's Ads Settings. Learn more in Google's advertising policies.

External links

Some pages link to external sources (such as the SEC's investor.gov). Their privacy practices are their own.

Children

These calculators are educational tools intended for adults. We do not knowingly collect information from children.

Changes to this policy

If this policy changes, the updated version will be posted here with a new "last updated" date.