Privacy Policy
Last updated: August 31, 2026
This policy explains what information Sleep Calculator (sleepcalculator.cc, "we," "us") collects when you use this site, and how that information is used.
Information we collect
The sleep calculator itself runs entirely in your browser. The time you enter is used only to calculate results on your device and is not sent to us or stored on any server. We do not require an account or ask for personal information to use the calculator.
Cookies and similar technologies
This site may use cookies and similar technologies for basic site functionality, and — if enabled — for advertising and analytics purposes described below.
Advertising (Google AdSense)
This site may display advertisements served by Google AdSense. Google, as a third-party vendor, uses cookies to serve ads based on a visitor's prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this site and/or other sites on the internet.
You can opt out of personalized advertising by visiting Google's Ads Settings. You can also learn more about how Google uses data when you use partner sites at policies.google.com/technologies/partner-sites.
Analytics
We may use analytics tools to understand general, aggregated site usage — such as how many people visit and which pages are popular — in order to improve the site. This data is not used to personally identify individual visitors.
Third-party links
This site may link to third-party sites, including Google's own policy pages. We aren't responsible for the privacy practices or content of external sites.
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. Changes will be posted on this page with an updated "last updated" date.
Contact us
If you have questions about this privacy policy, you can reach us via the contact page.