Sleep Cycle Calculator
Calculate optimal wake-up times and bedtimes based on natural 90-minute REM sleep cycles.
Input Parameters
Recommended Bedtimes
Optimal Bedtime (5 Cycles / 7.5 hrs)11:00 PM
Alternative Bedtime (6 Cycles / 9 hrs)10:00 PM
Short Bedtime (4 Cycles / 6 hrs)1:00 PM
Instant mathematical calculations computed automatically according to standard formulas.