Last updated: August 22, 2026
Numifylab ("we", "us", "our") provides free online calculators at numifylab.com. This page explains what information is collected when you use the site, how it's used, and what choices you have. We built these tools to be usable without an account, and this policy reflects that — there is no sign-up, no user database, and no personal profile stored on our servers.
We do not require you to create an account or submit personal information to use any calculator on this site. The numbers you type into a calculator (heights, weights, grades, amounts, etc.) are processed entirely in your browser and are never sent to our servers.
| What | How it's collected | Where it's stored |
|---|---|---|
| Calculator inputs | Typed directly into a calculator | Your browser only — never transmitted to us |
| Visit count & recently-used tools | Automatically, to show a "welcome back" message | Your browser's local storage (localStorage) |
| Standard server logs | Automatically, by our hosting provider | Server logs (IP address, browser type, pages visited, timestamps) |
This site uses your browser's localStorage — a standard web technology, not a cookie — to remember two small things:
This data stays on your device. We cannot see it, access it remotely, or link it to your identity. You can clear it at any time by clearing your browser's site data for numifylab.com.
We do not currently use tracking or advertising cookies. If this changes in the future (for example, if we add analytics), this policy will be updated accordingly before any such cookies are set.
This site loads web fonts from Google Fonts to display text correctly. Loading a font may share your IP address and browser information with Google as part of that request. No other third-party scripts, trackers, or advertising services are used on this site.
Like most websites, our hosting provider automatically logs standard technical information for every visit — including IP address, browser type, referring page, and timestamps. These logs are used only for security, troubleshooting, and understanding overall site traffic. They are not used to build individual user profiles.
This site is a general-audience utility tool and is not directed at children under 13. We do not knowingly collect personal information from anyone, and since no personal data is collected from any visitor, this applies equally to users of all ages.
Because calculator inputs never leave your browser, there is no personal calculation data on our servers to secure or breach. Our website itself is served over HTTPS to protect the integrity of the page you're viewing.
We may update this policy from time to time — for example, if we add new features, analytics, or third-party integrations. The "Last updated" date at the top of this page will always reflect the most recent revision. We encourage you to review this page periodically.
If you have questions about this privacy policy or how this site handles information, you can reach out via the contact details provided on our homepage.