Sleep Quality Score Calculator
Rate your sleep quality across key factors and get a score with personalized tips for improvement.
Based on sleep health research.
Sleep quality is not simply about the number of hours slept — it encompasses how quickly you fall asleep, how often you wake during the night, how rested you feel on waking, and whether your sleep aligns with your body’s natural circadian rhythm. Poor sleep quality is associated with reduced cognitive performance, mood disorders, weakened immune function, and increased risk of chronic disease.
Key Dimensions of Sleep Quality
The Pittsburgh Sleep Quality Index (PSQI), developed at the University of Pittsburgh, is the gold standard clinical tool for assessing sleep quality. It evaluates seven components:
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Sleep latency: How long it takes to fall asleep. Less than 20 minutes is ideal; over 30 minutes may indicate sleep-onset issues.
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Sleep duration: Total time actually asleep (not just in bed). Most adults need 7–9 hours. Consistently sleeping under 6 hours or over 9 hours both correlate with health problems.
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Sleep efficiency: Time asleep ÷ time in bed. Above 85% is healthy; below 75% indicates poor efficiency.
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Sleep disturbances: Waking during the night due to noise, pain, bathroom trips, or other causes.
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Sleep medication use: Reliance on sleep aids indicates underlying sleep difficulties.
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Daytime dysfunction: Trouble staying awake or maintaining enthusiasm during the day — a key indicator that nighttime sleep is insufficient or poor quality.
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Subjective sleep quality: Overall assessment of how well you slept.
What Good Sleep Looks Like
Healthy sleep involves:
- A consistent sleep schedule (same bedtime and wake time daily, even weekends)
- Cool, dark, and quiet sleeping environment
- No screens for 30–60 minutes before bed
- No alcohol within 3 hours of bedtime (alcohol disrupts REM sleep)
- No caffeine within 6–8 hours of sleep
- Regular physical activity (but not within 2 hours of bedtime)
Sleep Stages
A full sleep cycle takes approximately 90 minutes and includes light sleep, deep sleep (slow-wave), and REM (dream) sleep. Most people complete 4–6 cycles per night. Deep sleep is most restorative for the body; REM sleep is critical for memory consolidation and emotional processing.