
Enter your sleep duration to see your estimated REM sleep time and sleep cycle breakdown
REM sleep percentage varies by age
REM (Rapid Eye Movement) sleep is a sleep stage characterized by rapid eye movements. During this phase, you dream, and memory consolidation and emotional processing occur.
Memory Enhancement
Learning is consolidated into long-term memory
Emotional Regulation
Emotions are processed to maintain mental health
Brain Development
Especially important for children and teenagers
Creativity
Promotes problem-solving and creative thinking
Get Enough Sleep
REM sleep is more abundant later in the night, so 7-9 hours of sleep is important
Consistent Sleep Schedule
Going to bed and waking up at the same time stabilizes sleep cycles
Avoid Alcohol
Alcohol suppresses REM sleep, so avoid drinking before bed
Manage Stress
Stress disrupts REM sleep. Try meditation or relaxation techniques
Limit Caffeine
Avoid caffeine after 2 PM
Proper Room Temperature
A cool environment of 64-68°F (18-20°C) helps REM sleep
Q: How much REM sleep do I need daily?
A: Adults should have 20-25% of total sleep as REM sleep. With 7-8 hours of sleep, about 90-120 minutes of REM sleep is needed.
Q: What are symptoms of REM sleep deprivation?
A: Memory problems, reduced concentration, mood swings, daytime fatigue, and decreased learning ability may occur.
Q: If I don't dream, does that mean I lack REM sleep?
A: Not remembering dreams doesn't mean you're not getting REM sleep. If you wake during REM sleep, dreams are easier to remember; if you wake during deep sleep, they're harder to recall.
Q: Can naps compensate for REM sleep?
A: 20-30 minute naps are mostly light sleep. Naps over 90 minutes can reach REM sleep but may interfere with nighttime sleep.
Note: This calculator provides estimates based on average sleep patterns. Actual REM sleep time varies by individual, and accurate measurement requires polysomnography. If sleep problems persist, consult a healthcare professional.

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