The short version
The dates and numbers you enter into our calculators are processed entirely in your own browser using JavaScript. They are never transmitted to, or stored on, our servers. We don't require an account, a sign-up, or any personal information to use any calculator on this site.
Information we do not collect
We do not collect, store, or have access to the specific dates, ages, financial figures, health-related dates, or any other values you type into a calculator's input fields. Each calculation happens locally on your device and disappears when you close or refresh the page.
Local browser storage
Some preferences — such as your choice of light or dark theme — are saved using your browser's local storage so the site remembers your preference on your next visit. This information stays on your device and is never sent to us.
Analytics
We use Google Analytics to understand aggregate site usage — for example, which calculators are most popular and how visitors generally navigate the site. Google Analytics may use cookies and collect standard technical information such as your approximate location (city/country level), device type, browser, and pages visited. This data is aggregated and is not used to identify you individually. You can opt out of Google Analytics tracking using browser extensions such as Google's ownAnalytics Opt-out Browser Add-on, or by using your browser's private/incognito mode or a content blocker.
Cookies
Aside from cookies set by Google Analytics as described above, this site does not use cookies for advertising, tracking you across other websites, or building an advertising profile.
Third-party links
Some pages link to external resources (such as Google's analytics opt-out tool, or government sources referenced in a calculator's disclaimer). We aren't responsible for the privacy practices of external sites — check their own privacy policies before sharing any information with them.
Children's privacy
This site is not directed at children under 13, and we do not knowingly collect personal information from children.
Changes to this policy
We may update this privacy policy from time to time. Any changes will be posted on this page with an updated "Last updated" date above.
Contact us
If you have questions about this privacy policy, email us atsupport@alldatecalculator.com, or visit our Contact Us page.