Sleep Calculator is developed and maintained by a team of sleep science enthusiasts and researchers dedicated to making evidence-based sleep information accessible to everyone.
We believe everyone deserves to wake up refreshed and energized. Our mission is to provide free, scientifically-accurate sleep tools and education to help people optimize their sleep schedules based on natural sleep cycles.
All our content is based on:
Every recommendation is backed by sleep science research and peer-reviewed studies.
Our calculators use proven 90-minute sleep cycle methodology used by sleep researchers.
Free tools available in 5 languages, helping millions optimize their sleep worldwide.
Content continuously updated with latest sleep research and user feedback.
We are committed to providing accurate, helpful sleep information:
Sleep Calculator provides educational tools and information. We are not medical professionals. If you have chronic sleep problems, sleep disorders, or health concerns, please consult a qualified healthcare provider or sleep specialist.
We base our recommendations on research from leading sleep science organizations:
Have questions about our methodology or suggestions for improvement? Contact us - we'd love to hear from you!