Privacy Policy

Short version

We aim to collect as little data as possible. Calculations on this site are designed to run in your browser, and the values you enter aren't intentionally transmitted to our servers. We use analytics tools to understand how the site is used. If anything material changes — new analytics, advertising, or other third-party services — this page will be updated.

Calculator inputs

Calculations on this site are designed to run client-side in your browser. The values you enter (such as age, weight, and height) are processed on your device, and we do not request, log, or store these inputs on our servers.

As with any website, no system on the public internet can be guaranteed to be completely secure. If we ever change this design — for example, by introducing a feature that requires sending input data to a server — this page will be updated.

Analytics

We use analytics to understand which pages are popular and how the site performs. Depending on the provider, this may involve aggregated page-view counts, technical information (such as country, browser type, and referring page), and in some cases cookies or other identifiers. We aim to choose providers that respect user privacy, and we'll update this page if the analytics setup changes in a way that affects what is collected.

Cookies and browser storage

The site may use cookies or browser storage (such as LocalStorage) for purposes including remembering preferences (for example, unit system or dismissed banners), supporting analytics, security, and — where applicable — advertising or other third-party services. Where required by law, we will seek your consent before setting non-essential cookies. You can clear cookies and storage at any time through your browser settings.

Hosting and infrastructure

This site is served via standard web infrastructure. Hosting, content-delivery, and security providers necessarily process standard request metadata — such as IP address, request timing, and user agent — in order to deliver the site and protect it from abuse. Please refer to the relevant provider's privacy policy for details on their handling of that data.

Third parties and advertising

We may use third-party services for hosting, analytics, advertising, embedded content, error monitoring, and similar purposes. Some of these services may set cookies or collect basic device or usage information, governed by their own privacy policies. If or when we introduce advertising or new significant third-party services, we'll reflect that on this page. Links to external sites (for example, citations to PubMed or WHO) are governed by the destination site's own privacy policy.

Your rights

Depending on where you live, you may have specific rights under data-protection laws such as the GDPR (EU/UK) or the CCPA (California) — including, for example, the right to access, correct, or delete personal data we hold about you, or to opt out of certain uses. Because we collect minimal personal data, there is often little to act on, but if you have a question or specific request, please contact us at the email below and we'll do our best to assist.

Children

This site is intended for a general audience and is not directed to children under 13 (or the equivalent minimum age in your jurisdiction). We do not knowingly collect personal data from children. If you believe a child has provided us with personal information, please contact us so we can take appropriate action.

Changes to this policy

This policy may change as the site evolves. Material changes will be reflected in the "Last updated" date above. We recommend checking back occasionally.

Contact

Questions about privacy or a data-related request? Email info@healthcalculations.com.