Melatonin Ingestion Timing & 90-Minute Sleep Cycle Phase Calculator
Calculate the optimal clock time to take melatonin supplements, screen-off dark exposure time, and refreshingly timed wake-up hours based on complete 90-minute sleep cycles (4-6 ultradian cycles) to conquer insomnia and jet lag.
Optimal Wake-Up Hour (End of Sleep Cycle)
Calculator Inputs
Optimal Wake-Up Hour (End of Sleep Cycle)
Total Net Sleep Duration (Hours)
Calculated Sleep Cycles Duration (Hours)
Sleep hygiene & chronobiology tool. Low micro-dosing (0.3 to 1 mg) is scientifically favored for circadian phase shifting without next-day morning grogginess.
This tool is a mathematical wellness and fitness estimation model for general educational guidance only. The results do not constitute medical diagnosis, clinical advice, or treatment plans. Always consult a qualified physician or certified dietitian before starting any dietary regimen, exercise program, or making health decisions.
Calculation Methodology
Optimal Melatonin Ingestion Clock Time = Target Sleep Time - 45 Minutes. Optimal Wake Time = Bedtime + (N * 1.5 hours) + 15 minutes sleep onset latency.
Frequently Asked Questions
Related Calculators
Recommended tools and calculators tailored to your current calculation