How we protect your data
Last Updated: May 31, 2026
The Sleep Calculator is designed with privacy in mind. We do not collect or store any personal information you enter into the calculator.
All calculations are performed locally in your browser. Your sleep times, preferences, and quiz answers are never transmitted to our servers.
We use minimal cookies for essential site functionality. We may use Google Analytics to understand aggregate site usage patterns. This data is anonymous and cannot identify individual users.
Google AdSense may use cookies to serve personalized advertisements. You can manage ad personalization through your Google account settings.
We use the following third-party services:
These services have their own privacy policies. We encourage you to review them.
Since we do not collect personal data, there is no personal data to secure. All calculator inputs remain on your device.
This website is not intended for children under 13. We do not knowingly collect any information from children.
We may update this privacy policy from time to time. Changes will be posted on this page with an updated date.
If you have any questions about this privacy policy, please contact us at contact@sleepcalculator.com.