Privacy Policy

1. Who we are

TheCalcUniverse (we, our, us) is a free online calculator platform. Our website is available at thecalcuniverse.com.

2. What data we do NOT collect

We do not collect, store, or process:

• Your name, email address, or any contact information.
• Your calculator inputs or results — these are processed entirely in your browser and never sent to our servers.
• Your IP address for identification or tracking purposes.
• Any payment information (there is nothing to pay for).
• Demographic data, interests, or behaviour profiles (except as anonymised aggregate data via third-party analytics).

We do not sell your personal data to third parties under any circumstances.

3. Local storage

TheCalcUniverse uses your browser's localStorage — a storage area that lives only on your own device — for functional preferences such as your light/dark theme choice.

None of this data is accessible to us. It stays strictly on your device. You can clear all site data for this domain at any time through your browser settings.

4. Analytics

We use Google Analytics 4 to understand how visitors use our site — which calculators are most popular, how people navigate, and where we can improve. Google Analytics collects aggregated, anonymised data only. We have configured it with:

• IP anonymisation enabled (your IP is masked before any logging)
• Advertising personalisation disabled
• Google signals disabled (no cross-device tracking)

No personal data (name, email, address) is sent to Google Analytics. The data cannot be used to identify you individually. You can opt out by installing the Google Analytics Opt-Out Browser Add-On.

5. Third-party advertising

We use Google AdSense to display advertisements on this site. Google AdSense uses cookies (the DoubleClick cookie) to serve relevant ads based on your browsing history and to limit how often you see a particular ad. This cookie enables Google and its partners to serve ads based on your visits to this site and other sites across the internet.

You can learn more about how Google uses your data at How Google uses data when you use our partners' sites or apps.

Opting out: You can opt out of personalised advertising by visiting Google's Ads Settings. You can also opt out of third-party vendor cookies used for personalised ads through the NAI opt-out page.

AdSense may also use web beacons (invisible 1×1 images) to measure ad performance and conversions. These do not collect personal information.

6. Cookies

This site uses cookies for the following purposes:

• Advertising cookies: Google AdSense uses cookies (DoubleClick) to serve personalised or non-personalised ads. See the "Third-party advertising" section above.
• Analytics cookies: If analytics is enabled, the analytics provider may set a first-party cookie to count page views.
• Functional storage: Your theme preference (light / dark mode) is saved to localStorage — not a cookie — and is not accessible to us.

You can block or delete cookies through your browser settings at any time without affecting calculator functionality.

7. Third-party links

Some pages may link to external websites (for example, in blog posts or the About page). We are not responsible for the privacy practices of those sites. We recommend reading their privacy policies before interacting with them.

8. Children's privacy

TheCalcUniverse is not directed to children under 13, but children may use the calculators with adult supervision. We do not knowingly collect any personal information from children. If you believe a child has inadvertently provided personal data through our site, please contact us and we will delete it promptly.

9. Changes to this policy

If we make material changes to how we handle data (for example, if we add an analytics service), we will update this page and revise the "Last updated" date at the top. Continued use of the site after changes are published constitutes acceptance of the revised policy.

10. Contact

If you have questions or concerns about this Privacy Policy, please reach out via the contact email at privacy@thecalcuniverse.com. We will respond as quickly as possible.