PrivacyPolicy

Overview

How Much Water Do I Need (howmuchwaterdoineed.com) is a free hydration calculator. This policy explains what data the site handles, what stays on your device, and how advertising and analytics cookies are used. We do not sell your personal information.

Your health inputs never leave your browser

The calculator and the water tracker run entirely in your browser. The weight, age, sex, activity level, pregnancy status, climate, and log entries you enter are processed on your device and — for the tracker — stored only in your browser's localStorage. They are never transmitted to us or to any server, and we never see them.

Clearing your browser storage removes all of this data permanently. Because it is stored locally, we cannot recover it for you.

One opt-in exception: if you tap the climate-detection button, your browser asks for your geolocation and sends only your rounded latitude and longitude to Open-Meteo (api.open-meteo.com) to fetch local weather and elevation for the climate adjustment. None of your health inputs are included in that request, and the coordinates are not stored by us. If you never use climate detection, no location data leaves your device.

Information we do collect

We do not operate accounts, forms, or databases, so we collect no information directly. Like most websites, our hosting provider (Cloudflare) and the analytics and advertising tools described below automatically receive standard technical data such as your IP address, browser type, referring pages, and the dates/times of visits.

Analytics

We use Google Analytics to understand aggregate usage of the site (for example, which pages are most visited). Google Analytics uses cookies and similar technologies. Where required by law, we rely on your consent for these cookies. You can learn more about how Google uses data at policies.google.com/technologies/partner-sites.

Cookies and advertising (Google AdSense)

This site is supported by advertising delivered through Google AdSense. Third-party vendors, including Google, use cookies (including the DoubleClick DART cookie) to serve ads based on your prior visits to this website or other websites. Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to our site and/or other sites on the Internet.

These cookies may be set when you load any page of this site, including the calculator, and they allow Google and its vendors to recognize your browser over time. We do not control the cookies Google sets, and the health information you type into the calculator is never shared with advertisers.

Your advertising choices

You may opt out of personalized advertising by visiting Google's Ads Settings at www.google.com/settings/ads, or opt out of third-party vendor cookies for personalized advertising at www.aboutads.info/choices. You can also block or delete cookies through your browser settings; blocking cookies does not prevent you from using the calculator or tracker, since they do not depend on advertising cookies.

Your rights

Depending on where you live (for example, in the EU/EEA, the UK, or California), you may have rights to access, correct, or delete personal data, or to object to or restrict certain processing. Because we do not hold your data on our servers, most requests relate to data held by the third parties described above. Contact us at the address below and we will help or direct you to the right party.

Children's privacy

This site is not directed to children under 13, and we do not knowingly collect personal information from children. Calculator inputs stay on the user's own device.

Health information disclaimer

The content on this site — including the calculator result — is general educational information, not medical advice, and is not intended to diagnose, treat, or prevent any condition. Please read our full medical disclaimer in the site footer and consult a qualified healthcare provider about your personal hydration needs.

Changes to this policy

We may update this policy as the site or its tools change. The "last updated" date above reflects the current version. Significant changes will be reflected on this page before or when they take effect.

Contact

Questions about this policy? Email info@howmuchwaterdoineed.com or visit our contact page.