Privacy Policy
Effective & last updated
The short version. Water Calculator is free to use with no account. The numbers you type into our calculators stay in your browser — they are never sent to us or stored. We collect only what you send us directly (like a message through our contact form) and standard, mostly anonymous usage data through analytics. Some pages may show third-party ads or affiliate links. We do not sell your personal information for money, and advertising never affects our results or recommendations.
Who we are
Water Calculator (“Water Calculator”, “we”, “us”) operates the website at watercalculator.us from New York, United States. This Privacy Policy explains how we handle information in connection with the site. By using the site, you agree to the practices described here.
Information we collect
Information you give us
When you contact us — for example, through our contact form or by email — we receive the information you choose to send, such as your name, email address, and the contents of your message. We use this only to read and respond to you.
Calculator inputs stay on your device
Our calculators run entirely in your web browser. The values you enter are used to compute a result on your device and are not transmitted to our servers or stored by us. Closing or refreshing the page clears them.
Information collected automatically
Like most websites, when you visit we automatically receive standard technical information — such as your device and browser type, approximate region, referring page, and the pages you view — through server logs and analytics. We use Google Analytics, a service provided by Google LLC, to understand how the site is used so we can keep it working and improve it. Google Analytics sets cookies and similar identifiers and processes this data on our behalf. You can opt out of Google Analytics across all sites using Google's browser add-on at tools.google.com/dlpage/gaoptout.
Cookies and similar technologies
We use essential cookies needed for the site to function, and analytics cookies (through Google Analytics) to measure site usage. If a page shows third-party advertising, advertising cookies may also be set (see “Advertising and affiliate links” below). You can control or block cookies through your browser settings, and most browsers let you delete existing cookies; blocking some may affect how the site works.
Advertising and affiliate links
Parts of the site may display third-party advertising (for example, through Google AdSense), and some pages may include affiliate links, where we may earn a commission if you make a purchase through them — at no extra cost to you. Advertising and affiliate partners may use cookies and similar technologies to measure performance and to personalise ads based on your visits to this and other sites.
This never affects our calculations, results, or editorial recommendations, which are covered by our editorial policy. You can opt out of personalised advertising through Google's ad settings at adssettings.google.com, the Digital Advertising Alliance at optout.aboutads.info, and the Network Advertising Initiative at optout.networkadvertising.org.
How we use information
We use the information described above to operate, maintain, and improve the site and its calculators; to respond to your messages and corrections; to measure and understand site usage; to display and measure advertising where applicable; and to protect against errors, abuse, and security issues, and to comply with our legal obligations.
How we share information
We do not sell your personal information for money. We share it only with service providers who help us run the site — such as our website host, our analytics provider (Google), our advertising partners, and the service that delivers our contact-form messages — and only so they can perform those services for us. We may also disclose information if required by law or legal process, or to protect our rights, our users, or the public.
Please note that some cookie-based advertising activity may be considered a “sale” or “sharing” of personal information under California law. See Your privacy rights below for how to opt out.
Data retention
We keep the messages you send us for as long as needed to respond and to keep a record of corrections and requests, then delete or anonymise them. Analytics and log data are retained for a limited period consistent with our providers' settings and applicable law.
Your privacy rights
Wherever you live, you can ask us to access, correct, or delete the personal information you have sent us — such as your contact messages — by emailing privacy@watercalculator.us. We will respond as required by applicable law.
California residents (CCPA/CPRA)
If you are a California resident, you have the right to know what personal information we collect and how we use and share it; to request access to, and deletion or correction of, your personal information; and to opt out of the “sale” or “sharing” of personal information for cross-context behavioural advertising. We will not discriminate against you for exercising these rights. To make a request, email privacy@watercalculator.us. To opt out of ad-related “sharing,” you can use the advertising opt-outs listed above, and we honour the Global Privacy Control (GPC) browser signal where required by law.
EEA and UK visitors
If you are in the European Economic Area or the United Kingdom, you may have additional rights under the GDPR or UK GDPR — including access, correction, deletion, restriction, objection, and portability. Contact us at the address above to exercise them.
Children's privacy
The site is intended for a general audience and is not directed to children under 13, consistent with the U.S. Children's Online Privacy Protection Act (COPPA). We do not knowingly collect personal information from children under 13. If you believe a child has provided us information, contact us and we will delete it.
Security
We maintain reasonable administrative, technical, and physical safeguards designed to protect information in our care. No method of transmission or storage is completely secure, however, so we cannot guarantee absolute security.
Changes to this policy
We may update this policy from time to time. When we do, we will revise the “last updated” date above, and significant changes will be noted on this page. Your continued use of the site after an update means you accept the revised policy.
Contact us
Questions about this policy or your information? Email privacy@watercalculator.us or use our contact page.