Privacy Policy

Every calculator runs entirely on your device. The numbers you enter — your height, weight, dates, measurements — are used to compute a result in your browser and are never sent to us or stored on any server. We don't ask you to create an account, and we don't need your email to use anything on the site.

To power the "Recently used" list and to restore your last inputs when you reopen a calculator, we save a short history in your browser's local storage. This data stays on your device — it is not transmitted to us or anyone else.

We also save your region preference if you choose one — whether you want the India or Global version of a calculator, and whether you've dismissed the regional suggestion banner. That's the word "in" or "global", nothing more. It stays on your device, is never transmitted, and is removed by the same Clear history button or by clearing your browser's site data. Your region is guessed from your device's own language and timezone settings — we do not look up your IP address or location, and no request leaves your browser to determine it.

• What's saved: the calculator you used, its result, and the values you entered, capped at the last 20 entries per calculator.
• Where it lives: your browser's local storage, on your device only.
• How to remove it: use the Clear history button on the home page, or clear your browser's site data — either wipes it immediately and completely.

We use Google Analytics 4 (GA4) to understand aggregate usage — for example, which calculators are popular, roughly which country visitors come from, and what device types are common. This helps us decide what to build and improve.

GA4 receives aggregate, non-identifying measurement data. It does not receive the values you type into calculators — those never leave your browser. GA4 sets cookies to measure repeat visits; you can decline these by using your browser's cookie controls, a tracker-blocking extension, or Google's Analytics opt-out browser add-on.

The only cookies the site sets are the analytics cookies described above. We do not use advertising or cross-site tracking cookies. If we introduce advertising in the future, we will update this policy first and disclose exactly what changes.

• We don't require accounts, logins, or email addresses.
• We don't sell, rent, or share your data — there is no personal calculator data to share.
• We don't run advertising or ad-tracking cookies at this time.
• We don't knowingly collect information from children under 13; the site is a general-audience information tool and is not directed at children.

• Clear your local history anytime with Clear history, or by clearing your browser's site data.
• Block or delete analytics cookies through your browser settings or an opt-out extension.
• Use the calculators without providing any personal identifier — none is requested.

If this policy changes, we'll update the "Last updated" date above and, for material changes, note what changed. Continued use of the site after an update means you accept the revised policy.

HealthCalcNow is an informational tool, not a medical service. Results are estimates for general education and are not a diagnosis or a substitute for professional medical advice. Always consult a qualified healthcare provider about your individual situation.