Plan your sleep by calculating when to fall asleep to wake up at the end of complete sleep cycles.
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How this calculator works
Displays multiple sleep/wake time combinations based on complete 90-minute cycles. Includes 14-minute sleep onset delay. Shows times for 1 through 6 complete cycles.
Common questions about this calculator
Persistent sleep problems may indicate a sleep disorder. Consult a sleep specialist if you consistently have difficulty sleeping.
