Privacy Policy

01 Who We Are

WaterTankCalculator.com ("we", "us", "our") operates a free, browser-based collection of water tank calculators available at watertankcalculator.com. This Privacy Policy explains how we handle information in connection with your use of the Site.

By using the Site, you agree to the practices described in this policy. If you do not agree, please stop using the Site.

02 Information We Do NOT Collect

This is the important part. The following data is never collected, transmitted, or stored by us:

• Calculator inputs — every number you type into any calculator is processed locally in your browser and never sent to our servers.
• Names, email addresses, or contact details — we have no sign-up, no account system, and no contact forms that store submissions.
• Payment information — the Site is free. No payments, no billing data.
• Location data — we do not request or access your precise GPS or device location.
• Passwords or authentication credentials — there are no accounts to log into.

03 Information We Do Collect

We collect limited, anonymised data automatically when you visit the Site. This falls into two categories:

3.1 Server Logs

Our web server automatically records standard access log data, including:

• IP address (anonymised where possible)
• Browser type and version
• Operating system
• Referring URL (the page you came from)
• Pages visited on the Site and timestamps

This data is used solely for security, abuse prevention, and diagnosing server errors. It is not used to identify individuals and is not shared with third parties for marketing purposes.

3.2 Analytics

We use anonymised analytics tools (which may include Google Analytics) to understand aggregate traffic patterns — for example, which calculators are most used, which pages are visited, and how users navigate the Site. This data is:

• Aggregated and anonymised — not linked to you as an individual
• Used only to improve the Site
• Subject to the privacy practices of the analytics provider

04 Cookies

We may use cookies and similar tracking technologies. Here is what you can expect:

• Essential cookies — used for basic site functionality (e.g., remembering your unit preference on a calculator). These cannot be disabled without breaking the Site.
• Analytics cookies — set by third-party analytics providers to collect anonymised usage data. You can opt out of these.

We do not use cookies to serve targeted advertising, build behavioural profiles, or track you across other websites.

05 Third-Party Services

We may use the following third-party services, each with their own privacy practices:

• Google Analytics — anonymised web analytics. Governed by Google's Privacy Policy. You can opt out using the Google Analytics Opt-out Browser Add-on.
• Google Fonts — fonts are loaded from Google's servers, which may log your IP address. We use font preconnect to minimise this exposure.
• Web hosting / CDN provider — our hosting infrastructure may retain standard server logs as described in Section 3.

We do not sell, rent, or trade any data with third-party advertisers or data brokers. Ever.

06 How We Use Information

The limited data we collect is used exclusively for:

• Operating, maintaining, and improving the Site
• Diagnosing technical errors and server issues
• Understanding aggregate usage patterns to prioritise new calculators and features
• Protecting against abuse, spam, or malicious activity

We do not use your data for advertising, profiling, or any purpose beyond running this Site.

07 Data Sharing & Disclosure

We do not sell, trade, or rent any user data. We may disclose information only in the following limited circumstances:

• Legal compliance — if required by law, court order, or a valid government request.
• Security — to investigate or prevent fraud, abuse, or threats to the safety of users or the Site.
• Business transfer — if WaterTankCalculator.com is acquired or merged, data may transfer to the new owner subject to the same privacy commitments in this policy.

08 Data Retention

Server log data (including anonymised IP addresses) is retained for up to 90 days for security purposes, then deleted. Anonymised analytics data may be retained for up to 26 months, consistent with standard analytics provider configurations.

Since we collect no personal data, there is nothing to request deletion of beyond what is covered above.

09 Your Rights

Depending on your location, you may have rights under applicable data protection law (including GDPR, CCPA, and similar frameworks). Since we collect no personally identifiable information, most of these rights have limited practical application here — but we respect them regardless.

You have the right to:

• Know what data we hold about you (answer: none that identifies you)
• Request deletion of any data we hold (contact us via the About page)
• Opt out of analytics tracking (via your browser settings or the Google Analytics opt-out add-on)
• Withdraw consent to cookies at any time through your browser settings

10 Children's Privacy

This Site is not directed at children under the age of 13. We do not knowingly collect any data from children. If you believe a child has provided information through this Site, please contact us and we will take prompt action to remove it.

11 Security

The Site is served over HTTPS. We take reasonable technical measures to protect the Site and any incidental data from unauthorised access, alteration, or disclosure.

No method of transmission over the internet is 100% secure. However, since calculator inputs never leave your browser, the risk surface is minimal. The most sensitive data we hold — anonymised server logs — carries very low privacy risk by design.

12 Changes to This Policy

We may update this Privacy Policy from time to time. When we do, the "Last updated" date at the top will change. Significant changes will be noted prominently on this page.

Continued use of the Site after changes are posted constitutes your acceptance of the revised policy. If you disagree with any update, you should stop using the Site.

13 Contact

If you have questions, concerns, or requests related to this Privacy Policy, please reach out through our About page. We will respond to all legitimate privacy inquiries within a reasonable timeframe.