Trust and transparency
Medical disclaimer
Important limits on SleepPrism tools and educational sleep information.
Last reviewed: August 11, 2026
Not medical advice
SleepPrism provides general information and mathematical planning estimates. It does not provide a diagnosis, treatment plan, professional opinion, or individual medical recommendation.
What the calculator cannot know
The calculator does not measure your sleep, sleep stages, sleep quality, alertness, medications, health conditions, work demands, or risk. A displayed time is not a prediction that you will fall asleep, wake at a particular stage, or feel rested.
Seek qualified help
Consider speaking with a qualified health professional if sleep problems persist, worsen, cause significant distress, or affect daily functioning. Seek urgent local help for an emergency.
Safety
Do not rely on this site to determine whether you are safe to drive, work, care for someone, or operate machinery. If you feel dangerously sleepy, stop the risky activity and use appropriate local safety or medical resources.