Privacy Policy

1 Data We Do NOT Collect

MyCalculatorHQ does not collect any personal data, identifiers, or tracking profiles. You do not need to register, verify an email, or sign in to use any of our calculators. Every calculation — age, date difference, time duration, and more — is performed entirely in your browser using JavaScript. We never transmit your input data to our servers because there is nothing to transmit. Your dates, times, and personal information stay on your device and nowhere else.

2 Local Storage & Preferences

We use the browser's localStorage feature for one purpose only: remembering your dark/light theme preference. That is it. No scores, no usage history, no behavioral data is stored or transmitted.

• Your theme preference stays on your device only.
• We have no access to your localStorage data.
• You can clear all site data at any time through your browser settings.

3 Cookies & Third-Party Services

MyCalculatorHQ uses Google Analytics 4 to understand anonymous usage — which calculators are visited and what devices people use — but only if you accept cookies in the consent banner shown on your first visit. If you decline, no analytics cookies are set and nothing is tracked. We do not use Facebook Pixel or any advertising trackers. Our pages also load the Inter typeface from Google Fonts, which may log your IP address under Google's own privacy policy. Anything you type into a calculator never leaves your browser.

Advertising

MyCalculatorHQ displays ads served by Google AdSense to keep the calculators free. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and 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. If you accepted cookies in our consent banner, you may see personalized ads; if you declined, you will only see non-personalized ads. You may opt out of personalized advertising by visiting Google's Ads Settings. We never sell your personal information.

4 Contact Information

If you have any questions or concerns about this privacy policy, you can reach us through our Contact Us page. We are happy to clarify exactly how your data is (or is not) handled.