Last updated: January 2026.
LanHomeTech ("we", "us") operates www.lanhometech.com. This policy explains what information we collect and how we use it. We keep it short and plain.
Information we collect
We do not require an account and we do not ask for personal information to use our calculators. The measurements you enter and your recent results are stored only in your own browser (using local storage) and never sent to our servers. Clearing your browser data removes them.
Analytics
We use Google Analytics to understand which pages are useful and how the site performs. Analytics may set cookies and collect anonymized usage data such as pages visited, approximate location and device type. This helps us improve the tools; it is not used to identify you personally.
Advertising
We may display advertising, including Google AdSense, to keep the tools free. Advertising partners may use cookies to show relevant ads and measure their performance. You can learn about and control personalized advertising through Google's Ads Settings and industry opt-out pages.
Cookies
See our Cookie Policy for details on the cookies used and how to manage them in your browser.
Your choices
You can block or delete cookies in your browser settings and opt out of personalized ads through Google's controls. Disabling local storage will stop your calculations from being remembered between visits.
Children
Our tools are intended for general audiences and are not directed at children under 13.
Changes
We may update this policy; material changes will be reflected by the date above. Questions? See our contact page.