Rate your sleep with a PSQI-style assessment — no wearable required. Get your sleep quality score, a seven-component breakdown, and personalized recommendations in under 3 minutes.
Answer each question about your sleep over the past month.
Overall, how would you rate your sleep quality over the past month?
How long does it usually take you to fall asleep each night?
How often did you have trouble falling asleep within 30 minutes?
How many hours of actual sleep do you typically get each night? (Not time in bed — actual sleep)
What time do you usually get into bed at night?
What time do you usually get out of bed in the morning?
How often have you had trouble sleeping because of the following? Rate each:
How often have you taken medication to help you sleep (prescribed or over-the-counter) in the past month?
How often have you had trouble staying awake while driving, eating meals, or engaging in social activity?
How much of a problem has it been to keep up enthusiasm to get things done?
Cutoff >5 from Buysse et al. (1989). Sensitivity 89.6%, specificity 86.5%.
The Pittsburgh Sleep Quality Index (PSQI) was developed by Buysse, Reynolds, Monk, Berman, and Kupfer (1989) at the University of Pittsburgh Sleep Medicine Institute. Their landmark study — involving 148 clinical patients and 52 healthy controls — established that sleep quality is a multidimensional construct that cannot be reduced to a single number like hours slept. The resulting seven-component instrument demonstrated a global score >5 as the optimal clinical cutoff, with sensitivity of 89.6% and specificity of 86.5% for distinguishing poor sleepers from good sleepers.
Three decades of subsequent research have validated the PSQI across populations including chronic pain, cancer, psychiatric disorders, cardiovascular disease, and healthy aging adults. A comprehensive 2016 systematic review and meta-analysis by Mollayeva et al. confirmed robust psychometric properties across 20 languages and noted the PSQI's particular strength in capturing subjective sleep quality — the dimension most strongly linked to daytime functioning and quality of life outcomes.
Importantly, the PSQI captures what wearable devices cannot: the subjective experience of sleep. While actigraphy and consumer trackers estimate movement-based proxies for sleep stages, the PSQI asks how you actually feel — whether you feel rested, whether sleep problems are affecting your ability to function. Research consistently finds that self-reported sleep quality predicts health outcomes independently of objective sleep duration measures, making questionnaire-based assessment a complementary and often more clinically predictive tool than device data alone.
The Pittsburgh Sleep Quality Index (PSQI) is a validated, self-rated questionnaire developed by Buysse et al. (1989) at the University of Pittsburgh to measure sleep quality and disturbances over a one-month interval. It assesses seven component domains: subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleeping medication, and daytime dysfunction. Each component is scored 0–3, yielding a global score of 0–21.
A global PSQI score greater than 5 distinguishes poor sleepers from good sleepers with a sensitivity of 89.6% and specificity of 86.5% (Buysse et al., 1989). The index has been translated into more than 50 languages and is one of the most widely cited sleep assessment instruments in clinical and research settings. A comprehensive review by Mollayeva et al. (2016) confirmed its strong psychometric properties across diverse populations including traumatic brain injury, cancer, and chronic pain patients.
Sleep quantity refers simply to the total number of hours you sleep — a single, easily measured number. Sleep quality is a multidimensional construct that encompasses how restorative your sleep actually is: how quickly you fall asleep, how continuously you stay asleep, how efficiently your time in bed translates to true sleep, and how functional you are the following day. It is entirely possible to spend nine hours in bed and wake up feeling exhausted because the quality was poor.
Research consistently shows that subjective sleep quality is at least as important as duration for next-day cognitive function, mood, and metabolic health. The PSQI specifically captures this distinction — its subjective quality component asks how you rate your own sleep, independent of how many hours you logged. Adults who score favorably on sleep quality measures but sleep only 6.5 hours often report better daytime functioning than those who sleep 8 hours with fragmented, non-restorative sleep.
Because the PSQI captures seven separate dimensions, improving your score requires targeting your weakest components rather than making generic changes. Sleep latency (trouble falling asleep) responds well to stimulus control therapy — reserving the bed only for sleep and sex, getting out of bed if awake more than 20 minutes, and avoiding screens for 60 minutes before bed. Sleep disturbances (frequent awakenings) are often driven by noise, light, temperature, or underlying conditions like sleep apnea or restless legs syndrome. Daytime dysfunction is frequently worsened by inconsistent wake times, which disrupt circadian rhythm.
The most evidence-based intervention for improving overall sleep quality is Cognitive Behavioral Therapy for Insomnia (CBT-I), endorsed by the American Academy of Sleep Medicine as the first-line treatment for chronic insomnia. CBT-I addresses maladaptive sleep thoughts and behaviors and produces durable improvements in PSQI scores — often superior to sleep medications and without side effects. Sleep restriction therapy, a core CBT-I component, builds homeostatic sleep pressure by temporarily limiting time in bed, consolidating sleep, and raising efficiency. Even modest improvements in sleep hygiene (consistent schedules, cooler room temperature, reduced caffeine after noon) reliably move PSQI component scores in the right direction.
This calculator produces a simplified PSQI-style global score from 0 to 21, where lower is better. A score of 0–5 indicates good sleep quality, 6–10 indicates fair sleep quality with some areas for improvement, and 11–21 indicates poor sleep quality that may warrant further evaluation. These thresholds are derived from the clinical cutoff established by Buysse et al. (1989), who showed that a global score above 5 reliably identifies clinically significant sleep impairment.
Equally important are the seven component scores shown in the breakdown. A global score of 8 driven entirely by sleep latency and daytime dysfunction tells a very different story than the same score driven by short duration and high disturbance frequency — and each pattern points to different interventions. The component breakdown is where the real clinical value lies. Note that this online tool is a consumer-adapted version of the validated instrument; for a formal PSQI assessment, contact a sleep specialist or healthcare provider who can administer and interpret the full questionnaire in clinical context.
Consumer wearables (smartwatches, fitness trackers) measure sleep primarily through actigraphy — detecting movement and, increasingly, heart rate variability and skin temperature to infer sleep stages. Studies comparing wearable-derived sleep metrics against polysomnography (the clinical gold standard) show that while wearables are reasonably accurate for total sleep time and distinguishing sleep from wakefulness, they overestimate deep sleep, misclassify REM sleep at rates of 30–40%, and are generally poor at detecting short awakenings. Accuracy also varies substantially between device brands and individual users.
Validated questionnaires like the PSQI capture something wearables cannot easily measure: the subjective experience of sleep — how rested you feel, how much effort falling asleep requires, and how your sleep affects daytime functioning. A systematic review by Mollayeva et al. (2016) found that PSQI scores correlate meaningfully with clinical outcomes and quality-of-life measures in ways that objective actigraphy data alone does not predict. The most complete picture of sleep health combines both: objective data from a device and subjective assessment via a validated questionnaire. Neither alone tells the full story.
A persistently elevated PSQI score — particularly one that does not improve after 4–6 weeks of consistent sleep hygiene changes — warrants medical evaluation. Specific patterns that raise clinical concern include: very high sleep disturbance scores accompanied by witnessed breathing pauses or loud snoring (suggesting obstructive sleep apnea); high daytime dysfunction scores with irresistible urge to sleep in inappropriate situations (suggesting narcolepsy or severe OSA); abnormal leg sensations at night causing awakenings (suggesting restless legs syndrome); and extremely delayed sleep timing (unable to fall asleep before 2–4 AM) that persists regardless of effort (suggesting Circadian Rhythm Sleep-Wake Disorder).
Chronic poor sleep quality also raises cardiovascular and metabolic risk. Large epidemiological studies have linked PSQI scores above 8 with significantly elevated risks of hypertension, type 2 diabetes, depression, and all-cause mortality. If your score falls in the poor range (above 10) and has been elevated for more than a month, or if you have any of the specific symptom patterns above, the appropriate next step is a consultation with your primary care provider who can rule out underlying sleep disorders, assess comorbidities, and refer you to a sleep specialist or CBT-I therapist if indicated.