Chronic Fatigue Severity Scale Test

In about 7 minutes, see how emotional, physical, and mental fatigue may be building beyond everyday tiredness. Catch early warning signs and get clear next steps to recover and prevent burnout.

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Questions: 367 minutes

Hi! My name is Freudly, i am an AI therapist, I will give you an interpretation of the test after you complete it.

08:30

October 2, 2025

October 2, 2025
Material has been updated

October 2, 2025
Material has been published

23749 views

2645 completions

2219 likes

Scale Explorer

How the Scales are Structured

example score

3/10

Scale 4 (S4)

Scale 4 measures reduced motivation and shifts in social interaction associated with chronic fatigue-related disengagement.

Low impact

Moderate impact

High impact

0 – 3: Low impact | 4 – 6: Moderate impact | 7 – 10: High impact

A score of 3 falls in the Low impact range, suggesting only mild indications of decreased motivation or social withdrawal on this scale.

example score

6/12

Scale 3 (S3)

Assesses emotional-affective disturbances linked to chronic fatigue, such as mood changes and reduced emotional stability.

Low

Moderate

High

0 – 4: Low | 5 – 8: Moderate | 9 – 12: High

A score of 6 falls in the Moderate range, suggesting noticeable but not severe mood variability or emotional strain associated with fatigue.

example score

6/20

Scale 2 (S2)

Scale 2 measures reduced overall well-being and cognitive discomfort associated with chronic fatigue effects on mental functioning.

Low impact

Moderate impact

High impact

0 – 6: Low impact | 7 – 13: Moderate impact | 14 – 20: High impact

A score of 6 falls in the Low impact range, suggesting minimal signs of cognitive discomfort and overall well-being decline on this scale.

example score

24/30

Scale 1 (S1)

Assesses the severity of physiological discomfort symptoms associated with chronic fatigue and possible somatic manifestation of fatigue effects.

Low

Moderate

High

0 – 10: Low | 11 – 20: Moderate | 21 – 30: High

A score of 24 falls in the High range, indicating pronounced physiological discomfort symptoms consistent with increased bodily strain related to chronic fatigue.

example score

48/72

Chronic Fatigue Index (CFI)

The Chronic Fatigue Index (CFI) measures accumulated fatigue and how strongly it is affecting work capacity.

Low / none

Developing

Severe / very high

0 – 16: Low / none | 17 – 37: Developing | 38 – 72: Severe / very high

A score of 48 falls in the Severe / very high range, indicating marked accumulated fatigue with a strong impact on functioning.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

Overworked professionals

41%OF USERS

People with long hours and constant deadlines take it to see whether persistent tiredness is becoming chronic and affecting performance.

Burnout-prone caregivers

34%OF USERS

Parents and those caring for relatives use it to check if ongoing stress and poor recovery are wearing them down emotionally and physically.

Students in intense periods

25%OF USERS

Students during exams or heavy coursework take it to gauge cognitive fatigue, concentration issues, and whether rest habits need adjustment.

BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.

RESULTS YOU CAN ACTUALLY USE

What You’ll See After You Finish the Test

Scale Results
— Explained Clearly

Your scores across each test scale, translated into plain, usable insights. Not just numbers, but what they actually mean for your daily life, emotional state, and overall well-being.

AI-Powered
Interpretation

A structured, clinically grounded explanation. Our AI analyzes patterns and relationships between scales to provide a coherent interpretation — without alarmist language.

Statistical
Comparison

See how you compare to others. Your scores are placed in a statistical context, showing percentiles and trends based on anonymized platform data to help you understand what`s typical.

Practical
Recommendations

Actionable guidance tailored to your profile. Receive clear, realistic suggestions you can apply immediately — focused on coping, self-regulation, and realistic next steps.

AI-Detected
Insights

Key patterns you might not notice on your own. Surfacing subtle connections in your responses that help you better understand what may be driving your current results.

Discuss with
an AI Psychologist

Clarify, reflect, and explore right away. Talk through your outcomes, ask questions, and explore meanings in a calm, non-diagnostic dialogue environment.

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Used in 52+ countries

Benchmarking

See How You Compare

Once you finish the test, your results will be compared with real-world data from people in your country.
Below is a preview of the benchmarks we use to place your score in context.

Scale 4 (S4)

Average

5.7

Normal range

3.9 — 7.4

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

Scale 3 (S3)

Average

7.6

Normal range

5.6 — 9.6

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

Scale 2 (S2)

Average

10.9

Normal range

7.4 — 14.5

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

Scale 1 (S1)

Average

15.8

Normal range

10.8 — 20.7

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

Chronic Fatigue Index (CFI)

Average

21.9

Normal range

10.2 — 33.6

min.

max.

majority

This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.

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CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

Any questions left?

What does this questionnaire assess?

It screens for the severity of ongoing fatigue and related strain. Items cover emotional, physical, and cognitive fatigue.

Who is this questionnaire intended for?

It is intended for adults reporting persistent tiredness or reduced performance. It is also used for preventive screening in high-demand work settings and clinical checkups.

How long does it take and how many items are included?

Completion time is about 7 minutes. The questionnaire contains 36 items.

How should responses be selected?

Select the option that best matches the current or recent typical state. Answer all items and avoid overthinking individual questions.

How should results be interpreted and what are the next steps?

Results indicate the level of fatigue and whether it may be affecting functioning. Elevated scores support adding recovery measures and may warrant medical or mental health evaluation if symptoms persist or worsen.

WHAT THE TEST MEASURES

About This Assessment

Chronic Fatigue Severity Scale Test

fatigue

Persistent fatigue may reflect more than transient tiredness and can warrant structured assessment. The Chronic Fatigue Severity Scale is a self-report measure designed to screen the severity and functional impact of ongoing fatigue symptoms. It includes 36 items and typically takes about 7 minutes to complete.

Items generally sample fatigue-related experiences across physical, emotional, and cognitive domains to support a multidimensional profile of symptom burden. Results from the Chronic Fatigue Severity Scale can help inform clinical interviewing, triage for further medical or psychological evaluation, and monitoring of change over time in occupational health or general clinical settings. The measure is attributed to David A. Kosinski.

Author: David A. Kosinski

Literature: Jason, L. A., Evans, M., Brown, M., & Porter, N. Chronic fatigue syndrome: A review of epidemiology, diagnosis, and treatment. Journal of Clinical Psychology. 2010.

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