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Epworth Sleepiness Scale Calculator

Updated Sep 22, 2026 By Infinity Calculator
Rate Formulas Medical disclaimer
0 of 8 questions answered 0% complete
How likely are you to doze off in each situation?

Choose the most appropriate response for each of the 8 situations, based on your usual way of life in recent times. Answer all 8, then select Calculate Score.

Epworth Sleepiness Scale — 8 situations, each scored 0 to 3.
Situation Chance of Dozing
Total Score — / 24
Your Epworth Sleepiness Scale Result

Score Summary

Your ESS Score
13
out of 24 points
Moderate Excessive Sleepiness
Score Range
13–15
% of Maximum
54.2%
Situations Rated “High”
1 of 8
Biggest contributor(s) to your score
Step-by-Step Solution
Where Your Points Came From
ESS Score Range Reference
Score Range Category Status
0 – 5Lower Normal SleepinessNormal
6 – 10Higher Normal SleepinessNormal
11 – 12Mild Excessive SleepinessAbove normal
13 – 15Moderate Excessive SleepinessAbove normal
16 – 24Severe Excessive SleepinessAbove normal

Introduction

The Epworth Sleepiness Scale (ESS) is a short quiz that measures how sleepy you feel during the day. Dr. Murray Johns created it in 1991, and doctors still use it today to check for excessive daytime sleepiness.

This calculator asks you about 8 everyday situations, like reading a book, watching TV, or riding in a car. For each one, you pick how likely you are to doze off. Each answer is worth 0 to 3 points:

  • 0: Would never doze
  • 1: Slight chance of dozing
  • 2: Moderate chance of dozing
  • 3: High chance of dozing

Your 8 answers are added up into a total score from 0 to 24. A score of 10 or less is normal. A score of 11 or higher may mean you are too sleepy during the day. That can be a sign of a sleep problem like sleep apnea, narcolepsy, or simply not getting enough sleep.

After you answer all 8 questions, you will see your total score, what range it falls in, a step-by-step breakdown of the math, and charts that show which situations added the most points. Answer based on how you have felt in recent times, not just today.

This calculator is a screening tool, not a diagnosis. If your score is 11 or higher, or if sleepiness is affecting your driving, work, or school, talk to a doctor.

How to use our Epworth Sleepiness Scale Calculator

Rate how likely you are to doze off in 8 everyday situations. The calculator adds your answers and gives you a total ESS score out of 24, your sleepiness level, and a breakdown of where your points came from. For each question, pick 0 (would never doze), 1 (slight chance), 2 (moderate chance), or 3 (high chance), based on your usual life in recent times.

Sitting and reading: Choose how likely you are to fall asleep while reading a book, paper, or screen.

Watching TV: Pick your chance of dozing off while sitting in front of the TV.

Sitting inactive in a public place: Think about a movie, a theater, or a meeting where you sit still and quiet, and choose your chance of dozing.

As a passenger in a car for an hour without a break: Rate how likely you are to fall asleep while riding, not driving.

Lying down to rest in the afternoon: Choose your chance of dozing when you lie down in the afternoon and have time to rest.

Sitting and talking to someone: Rate how likely you are to doze off during a normal talk with another person.

Sitting quietly after lunch without alcohol: Pick your chance of dozing after a meal, with no drinks involved.

In a car, while stopped for a few minutes in traffic: Rate how likely you are to doze at a red light or in stopped traffic.

After you answer all 8 questions, select Calculate Score to see your total, your score band, and your step-by-step results. Select Clear / Reset to start over with blank answers.

What Is the Epworth Sleepiness Scale?

The Epworth Sleepiness Scale (ESS) is a short sleep quiz. It asks how likely you are to doze off during eight everyday things, like reading a book or riding in a car. A doctor named Murray Johns made it in 1991 at Epworth Hospital in Melbourne, Australia. Today, sleep clinics all over the world still use it.

What the ESS Measures

The ESS does not ask how tired you feel right now. It measures your average daytime sleepiness over the past few weeks. This is often called excessive daytime sleepiness, or EDS. Feeling sleepy in a quiet, boring moment is normal. Falling asleep when you should be awake and alert is not.

How the Scoring Works

You rate each of the eight situations from 0 to 3:

  • 0: Would never doze
  • 1: Slight chance of dozing
  • 2: Moderate chance of dozing
  • 3: High chance of dozing

Add the eight numbers together. The lowest score is 0 and the highest is 24. A score of 11 or more is the usual cut-off for excessive sleepiness. Most healthy adults score between 2 and 10.

What a High Score Can Mean

A high ESS score is a clue, not a diagnosis. It tells you something may be stealing your sleep or hurting its quality. Common causes include:

  • Obstructive sleep apnea (breathing stops and starts at night)
  • Not getting enough hours of sleep
  • Insomnia or a broken sleep schedule
  • Narcolepsy or restless legs syndrome
  • Shift work or jet lag
  • Some medicines, alcohol, or health problems like depression and thyroid trouble

Why Daytime Sleepiness Matters

Being very sleepy in the day is risky. It raises your chance of car crashes, work accidents, and mistakes at school or on the job. Over time, poor sleep is also linked to high blood pressure, heart disease, weight gain, and type 2 diabetes. Finding the cause early can protect your health.

Tips for Answering Honestly

Think about your normal life in recent weeks, not one bad night. If you have not been in one of the situations lately, guess how it would affect you. Dozing means actually falling asleep, not just feeling drowsy. Answer for yourself. It is easy to undercount how sleepy you really are, so asking a family member for their view can help.

What to Do Next

If your score is 11 or higher, talk to a doctor or a sleep specialist. Bring your score with you. They may ask you to keep a sleep diary or take a sleep study to find the real cause. If your score is under 11 but you still feel worn out, that is worth a conversation too. The ESS is a good starting point, but it cannot replace a real medical exam.

Formulas used

Total ESS Score
S = \sum_{i=1}^{8} s_i, \quad s_i \in \{0,1,2,3\}
Percentage of Maximum Score
\text{\%Max} = \frac{S}{24} \times 100\%
Excessive Sleepiness Cut-off
S \ge 11 \;\Rightarrow\; \text{above normal}
Count of Situations Rated High
N_{high} = \sum_{i=1}^{8} [\, s_i = 3 \,]
Severity Band Classification
\text{Tier}(S) = \begin{cases} \text{Lower Normal} & 0 \le S \le 5 \\ \text{Higher Normal} & 6 \le S \le 10 \\ \text{Mild Excessive} & 11 \le S \le 12 \\ \text{Moderate Excessive} & 13 \le S \le 15 \\ \text{Severe Excessive} & 16 \le S \le 24 \end{cases}
Top Contributing Situation(s)
s_{\max} = \max_{1 \le i \le 8} s_i
Completion Progress
P = \frac{n_{\text{answered}}}{8} \times 100\%

Frequently asked questions

What Epworth score suggests sleep apnea?

There is no exact score that proves sleep apnea. But many people with untreated sleep apnea score 11 or higher, and a lot score 16 or more. Plenty of people with sleep apnea score under 11 too, especially women and older adults.

Sleepiness is only one clue. Loud snoring, gasping at night, morning headaches, and a large neck size matter just as much. A sleep study is the only way to know for sure.

What is the difference between feeling tired and feeling sleepy?

They are not the same thing:

  • Sleepy means you could actually fall asleep if you sat still. That is what the Epworth score measures.
  • Tired or fatigued means low energy, sore muscles, or a foggy brain, but you still cannot nap.

This matters because fatigue often comes from things like anemia, depression, or thyroid problems, while true sleepiness points more to a sleep disorder. Someone with bad fatigue can still score low on the Epworth scale.

Does a high Epworth score mean I have narcolepsy?

No. Most people with high scores do not have narcolepsy. It is a rare condition.

People with narcolepsy usually score very high, often 16 to 24. But they also have other signs, like sudden muscle weakness when they laugh (cataplexy), sleep paralysis, or dream-like images as they fall asleep. Narcolepsy is diagnosed with an overnight sleep study plus a daytime nap test called an MSLT.

Can your Epworth score get better with treatment?

Yes. The score is meant to change. Doctors often use it before and after treatment to see if it is working.

People who use CPAP for sleep apnea often drop several points within weeks. Getting more hours of sleep, fixing a shift-work schedule, or changing a medicine that causes drowsiness can also lower your score. A score that stays high after treatment is a sign something is still being missed.

How often should you take the Epworth Sleepiness Scale?

Taking it every day is not useful, because it asks about your usual life over recent weeks, not last night.

Good times to retake it:

  • Every few months if you are watching a sleep problem
  • About 4 to 8 weeks after starting a new treatment like CPAP
  • Any time your sleepiness clearly gets worse

Does age affect your Epworth score?

Age itself changes the score less than you might expect. Healthy older adults usually score about the same as healthy younger adults, often between 2 and 10.

Being older is not a reason to accept heavy daytime sleepiness. If an older adult scores 11 or higher, the cause is usually a real problem, such as sleep apnea, medicine side effects, or pain that breaks up sleep, and it is worth checking.

Can a high Epworth score affect my driving or a DOT physical?

It can. Commercial drivers often get an Epworth questionnaire during a DOT physical. A score of 11 or higher, especially with snoring or a high BMI, can lead the examiner to order a sleep study before giving full certification.

Treatment usually fixes this. Most drivers who start CPAP and use it well keep driving. Answer honestly, since falling asleep at the wheel is far more dangerous than a delayed form.

What if I have not been in one of the eight situations lately?

Give your best guess. Imagine yourself in that situation now and pick the answer that fits.

For example, if you never ride as a car passenger, think about how you would feel sitting still in a car for an hour. Do not skip the item or mark 0 just because it has not happened. Skipping items makes the total too low and can hide a real problem.

Does caffeine hide daytime sleepiness?

Yes, it can. Coffee, energy drinks, and soda block the brain signal that makes you feel sleepy. If you drink caffeine all day, you may score lower than your real sleep debt deserves.

Notice how you feel on days without caffeine. If you cannot get through a normal day without it, that itself is a hint that your sleep is not doing its job.

How can I lower my daytime sleepiness score?

Start with the basics for a few weeks:

  • Sleep 7 to 9 hours a night, including weekends
  • Keep the same bedtime and wake time
  • Skip alcohol close to bedtime, since it breaks up deep sleep
  • Cut caffeine after early afternoon
  • Check if any of your medicines cause drowsiness
  • Get morning sunlight and daily movement

If your score is still 11 or higher after doing these things, see a doctor. Something like sleep apnea will not improve with habits alone.

What is the difference between the Epworth scale and STOP-BANG?

They screen for different things.

  • Epworth measures how sleepy you are in the daytime. It fits any sleep problem.
  • STOP-BANG checks your risk of obstructive sleep apnea using snoring, blood pressure, age, neck size, BMI, and sex.

Doctors often use both. A high score on each together is a strong reason to order a sleep study.

Can anxiety or depression raise your Epworth score?

Yes, but often in an indirect way. Depression and anxiety can wreck sleep at night, which leaves you sleepy the next day. Some medicines for them also cause drowsiness.

Still, many people with depression feel drained and low on energy without being able to nap. That is fatigue, and it may show up as a fairly normal Epworth score. Tell your doctor about both your mood and your sleep so nothing gets missed.

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