Privacy policy.
Last updated: July 2, 2026. At Aquarium Calculator Pro, we are committed to protecting your privacy. This policy outlines how we treat data and details our client-side calculations approach.
1. Browser-local execution.
Unlike traditional calculator tools that transmit your inputs to a remote server, Aquarium Calculator Pro operates entirely inside your web browser.
All calculations for tank dimensions, gross and net water volume, substrate displacement, glass or acrylic structural thickness, fish stocking density, plants, filtration flow rate, and heater wattage are processed client-side. Your inputs never leave your device.
2. Information we do not collect.
Because of our client-side architecture:
- We do not collect or store your aquarium dimensions or calculations.
- We do not collect the names or quantities of the fish and plants in your stocking lists.
- We do not maintain user databases, nor do we require sign-ups, accounts, or registrations.
3. Standard web analytics.
We use standard, anonymous web analytics tools (such as Google Analytics) to monitor aggregate traffic patterns, visitor counts, and page usage. This helps us optimize performance, verify browser compatibility, and prioritize translations or features.
This analytical data does not contain any personally identifying details (IP addresses are anonymized where applicable), nor is it tied back to your specific calculator inputs.
4. Cookies.
We utilize standard technical cookies to preserve user settings. For instance, if you select metric or US units in the header, we may store this choice in your browser's local storage or cookies so that the settings persist when you revisit the site.
You can block or delete cookies in your browser settings. Blocking these technical cookies will not prevent you from using the calculator; it will simply revert the interface to default metric values on reload.
5. External links.
Our site contains links to other web resources, particularly inside the FAQ section. If you click on a third-party link, you will be directed to that site. We do not operate or control third-party platforms and strongly advise you to review their respective privacy policies.
6. Policy updates.
We may update this Privacy Policy from time to time to align with new site utilities or changing legal requirements. Any modifications will be posted directly to this page with an updated revision date.
7. Contact information.
If you have questions regarding this Privacy Policy or our data handling practices, please feel free to reach out to us at:
Email: privacy@fishaquariumcalculator.com or via our Contact Us page.