Calculate the ideal bedtime based on your wake time and the number of sleep cycles you need.
Enter your values below
How this calculator works
Based on your desired wake time, this calculator finds the optimal bedtime that aligns with complete sleep cycles. Each cycle is 90 minutes, with an additional 14 minutes for sleep onset.
Common questions about this calculator
Persistent sleep problems may indicate a sleep disorder. Consult a sleep specialist if you consistently have difficulty sleeping.
