Disclaimer

Last updated: August 31, 2026

Not medical advice

Sleep Calculator is an educational and informational tool only. It does not provide medical advice, diagnosis, or treatment, and nothing on this site should be treated as a substitute for professional medical guidance.

Individual differences

The calculations on this site are based on general population averages — a roughly 90-minute sleep cycle and about 15 minutes to fall asleep. Actual sleep cycle length and time to fall asleep vary from person to person, and can be affected by age, stress, medication, sleep disorders, and many other factors. Your results may not exactly match your own sleep patterns.

Ongoing sleep difficulties

If you experience persistent trouble falling asleep, staying asleep, or feeling rested, please consult a doctor or qualified healthcare professional. This tool is not designed to identify, treat, or manage any sleep disorder or medical condition.

No guarantees

We aim for the calculations on this site to be a useful general guide, but we make no warranties about their completeness, reliability, or accuracy for any individual. Use of this site and any information from it is at your own risk.

Contact us

Questions about this disclaimer can be sent via the contact page.