How to improve your sleep score

Every big wearable now hands you a sleep score each morning, but each one adds it up differently. Here's what goes into the score on the five most common devices, what counts as good on each, and the habits that move it.

On this page: How scores work · Device by device · What's a good score? · Habits that can help · Keeping it in perspective

How do sleep scores work?

A sleep score squeezes a night of estimates into one number. The watch or ring guesses when you fell asleep, when you woke, how often you stirred, and which sleep stage you were probably in, using movement, heart rate and, on some devices, heart rate variability and skin temperature. Then each company's formula turns that into a score.

The formulas differ, and most companies don't publish the exact weights. But the inputs fall into the same few buckets:

• How long you slept. Apple gives it half the points and Oura calls it the most significant contributor.
• When you slept. How steady your bedtime and wake time are from night to night.
• How unbroken it was. Wake-ups, restlessness, and how long it took to fall asleep.
• Stages and body signals. Deep and REM estimates, overnight heart rate or "stress". These differ the most between brands.

That's good news. You don't need a different plan for each device. The same habits move every score.

What goes into the score on each device?

This is how each company describes its own score on its help pages, checked November 10, 2026. Brands update their formulas from time to time, so check the source links if something looks different on your device.

Apple Watch. Apple is the only one of the five that publishes exact points. Half the score is duration, so a short night drags it down more than a restless one. The bedtime part rewards falling asleep at a similar time to your recent nights. Stages aren't one of the three published parts. Our Apple Health sleep guide explains the Health app's chart and stages.

Fitbit and Pixel Watch. Google's updated score, now shown in the Google Health app, is built from six metrics: total sleep, time to sound sleep, sound sleep, restlessness, interruptions and full awakenings, where only wake-ups longer than five minutes count as interruptions. Your numbers are compared with targets for your age, gender and time in bed, and Google says most users average between 72 and 83.

Garmin. Garmin's score, powered by Firstbeat Analytics, weighs how long you slept against how well, including stage estimates, awake time and an overnight stress score based on heart rate variability. Garmin's own published data put the average Garmin user at 72 for February 2024 to January 2025, in the Fair band.

Oura. Oura's score blends seven contributors, each also rated 0 to 100 in the app, and Oura says total sleep is the most significant one. Timing rewards a sleep midpoint roughly between midnight and 3 a.m., adjusted for whether you're a morning or evening type.

WHOOP. WHOOP's Sleep Performance is a percentage rather than a points total. It starts with sufficiency, how much of your personal sleep need you got. It also looks at how consistent your bed and wake times were compared with the previous four days, how much of your time in bed you were asleep, and "sleep stress" from your heart signals.

What's a good sleep score?

Use your device's own bands, and aim for your own normal rather than a perfect 100.

• On Fitbit and Garmin, 80 or above is labeled Good. The 70s are Fair and very common: Google says most Fitbit users average 72 to 83, and Garmin put its average for February 2024 to January 2025 at 72.
• On Oura, 70 to 84 is Good and 85 or above is Optimal.
• On Apple Watch, 61 to 80 is OK and 81 to 95 is High. Apple raised these thresholds in watchOS 26.2, so a score that used to be labeled High might read OK now.
• On WHOOP, look at the band the app shows and at which of the four parts let you down.

A single low score after a late night or a party isn't a problem to solve. A score that sits well below your usual for a week or more is worth a look, starting with the habits below.

Habits that can help your sleep score

None of these is a sure thing, and everyone responds differently. They're the everyday basics that sleep experts and the device makers themselves point to, and they line up with what the scores reward.

1. Give yourself enough time in bed. Since duration carries the most weight, this is the single biggest lever. Most adults need 7 to 9 hours of sleep (NIH), and time in bed has to be a bit longer than that. Our sleep needs by age tool shows the recommended range for you, and the sleep calculator suggests bedtimes for a fixed wake-up time.
2. Keep the same bedtime and wake time, weekends included. Apple, Oura and WHOOP all score consistency directly, and a steady schedule tends to make falling asleep easier too. If you need to shift, move by 15 to 30 minutes at a time.
3. Move your last coffee earlier. Caffeine lingers for hours. Our caffeine cutoff calculator estimates when to stop for tonight's bedtime.
4. Go easy on alcohol in the evening. Alcohol can make you drowsy but tends to break up sleep later in the night, which shows up as wake-ups, a higher overnight heart rate, and lower scores on devices that track heart signals.
5. Finish hard workouts and heavy meals earlier. Both can keep your heart rate up at bedtime. Daytime activity, on the other hand, generally supports sleep.
6. Make the room cool, dark and quiet. If you can't make it quiet, steady background sound can make sudden noises less jarring. Our noise color guide explains which sound covers what, and the safe volume guide explains how low to keep it.
7. Build a short wind-down. Ten to thirty minutes of something calm, with lights low and screens away, helps many people fall asleep sooner, which helps latency and "time to sound sleep". Our 4-7-8 breathing pacer is one option.
8. Wear the device properly. A loose band or a dead battery can wreck a score. Charge before your wind-down, and wear it snug but comfortable.

To see which habits matter for you, note what you did each evening for two weeks and compare it with your scores. Our sleep journal guide has a simple template for that.

Keeping your score in perspective

A sleep score is an estimate built on estimates. Wrist and finger devices are fairly good at total sleep time and rougher on stages. How you feel during the day matters more than the number.

• Don't chase stages. There's no dependable way to add deep or REM sleep on command. Look after total sleep and timing, and the rest follows as well as it's going to.
• Watch for "score anxiety". If checking your score each morning makes you tense at bedtime, hide it for a week.
• Know when to get help. If you sleep enough but feel exhausted for weeks, snore loudly, or someone notices you stop breathing at night, talk to a doctor. A good or bad score can't rule anything in or out.

Where SleepBetter.ai fits

SleepBetter.ai isn't a sleep tracker and doesn't give you a score. It's a wind-down app for iPhone: an AI sleep coach that helps you plan and stick to a bedtime routine with reminders, plus sleep sounds and sleep journeys that keep playing with your screen locked and fade out on a timer. If a steady bedtime is the habit you're working on, a routine and a familiar sound can make it easier to keep.

This page is general information about sound and sleep habits, not medical advice. If poor sleep is affecting your days, talk to a doctor or a sleep specialist.