Privacy Policy
Last updated: September 2026
Overview
Ezcalcus (https://www.ezcalcus.com) provides free, browser-based calculators. This policy explains what information is and isn’t collected when you use the site.
Calculator data stays in your browser
None of our calculators require an account, and none of the numbers you enter — height, weight, age, or anything else — are sent to our servers. Every calculation runs entirely client-side, in your own browser. When you close the tab, that data is gone.
Local storage
We use your browser’s local storage to remember one thing: your light or dark theme preference. This stays on your device and is never transmitted anywhere.
Cookies and analytics
We may use privacy-respecting analytics to understand which calculators are useful and to fix bugs — for example, aggregate page-view counts. This data is anonymized and is not used to identify individual visitors.
Affiliate links
Some pages include affiliate links (for example, to Amazon). If you click one and make a purchase, we may earn a small commission at no extra cost to you. This never affects the calculators or advice on this site.
Third-party links
Our pages may link to external sites. We aren’t responsible for the privacy practices or content of sites we don’t operate.
Children’s privacy
This site is not directed at children under 13, and we do not knowingly collect information from them.
Changes to this policy
We may update this policy occasionally. The “last updated” date at the top of this page will reflect the most recent change.
Contact
Questions about this policy? Visit our Contact page.