REM Sleep Calculator

Calculate your estimated REM (Rapid Eye Movement) sleep duration and understand your sleep stage distribution. REM sleep is crucial for memory consolidation, learning, and emotional processing. This calculator estimates your REM sleep based on age, sleep quality, and other factors.

REM Sleep Calculation: Base REM Percentage by Age: • Infant (0-1 year): 50% • Toddler (1-3 years): 30% • Child (3-12 years): 25% • Teen (13-18 years): 23% • Adult (18-65 years): 22% • Senior (65+ years): 17% Quality Multipliers: • Poor: 0.75× | Average: 0.90× | Good: 1.0× | Excellent: 1.1× Factor Adjustments: • Alcohol: 0.60× (40% reduction) • Medication: 0.80× | Stress: 0.85× | Sleep Disorder: 0.70× REM Minutes = Total Sleep (min) × Base % × Quality × Factor Other Stages: Light Sleep ~50%, Deep Sleep ~15-28%
Example: Adult with 8 hours sleep, good quality, no factors Total Sleep = 8 hours = 480 minutes Age Group = Adult (22% base REM) Quality = Good (1.0× multiplier) Factors = None (1.0× multiplier) REM Sleep = 480 × 0.22 × 1.0 × 1.0 = 105.6 minutes = 1.76 hours Light Sleep = 480 × 0.50 = 240 minutes = 4 hours Deep Sleep = 480 × 0.20 = 96 minutes = 1.6 hours Awake = 480 - 105.6 - 240 - 96 = 38.4 minutes Sleep Cycles = 8 / 1.5 = 5.3 complete cycles With alcohol: REM = 105.6 × 0.60 = 63 minutes (40% reduction!)
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