Privacy Policy
Last updated: October 2026
The short version
Your calculations never leave your browser. We do not run accounts, collect names, or store your age, weight or height anywhere. The only data collected on this site comes from standard hosting logs and, if advertising or analytics are added in the future, the cookies described below.
Information we collect
Calculator inputs. Everything you type into a calculator is processed locally on your device by JavaScript. It is never transmitted to or stored on our servers.
Server logs. Like nearly every website, our host records standard technical data (IP address, browser type, pages requested, timestamps) for security and performance. Logs are retained for a limited period and not combined with other data.
Advertising and cookies
This site does not currently display advertising. It may show ads from third-party vendors, such as Google AdSense, in the future. If it does, third-party vendors, including Google, may use cookies and similar technologies to serve ads based on your prior visits to this and other websites, and to measure ad performance. Google's use of advertising cookies enables it and its partners to serve ads based on visits to this site and/or other sites on the Internet.
- Google's use of advertising cookies is described in its advertising policies.
- You can opt out of personalized advertising at Google Ads Settings and at aboutads.info.
- Where required (including the EEA, UK and Switzerland), consent will be requested through a certified consent banner before personalized ads are served.
Analytics
If analytics are enabled on this site, they are used only in aggregate form to understand which tools are useful and where pages break. No calculator input is ever sent to any analytics service.
Data sharing
We do not sell personal information. Advertising partners process data under their own privacy policies as described above.
Children
These tools are designed for adults and are not directed at children under 13.
Changes and contact
If this policy changes, the updated version will be posted on this page with a new date. Questions: hello@example.com.