Fatigue Assessment Scale (FAS) Test

Understand your current physical and mental fatigue level in about 2 minutes. Ten quick items give a clear snapshot and help track changes over time to guide care decisions.

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Questions: 102 minutes

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08:30

October 2, 2025

October 2, 2025
Material has been updated

October 2, 2025
Material has been published

28288 views

1601 completion

1281 likes

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How the Scales are Structured

example score

35/50

Fatigue Assessment Scale (FAS)

Measures overall severity of fatigue, including physical and mental tiredness, over daily life.

Low fatigue

Moderate fatigue

High fatigue

10 – 21: Low fatigue | 22 – 34: Moderate fatigue | 35 – 50: High fatigue

A score of 35 falls in the High fatigue range, suggesting a notably elevated level of general tiredness on this scale.

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DATA-BASED USER COHORTS

Who Usually Takes This Test?

People with ongoing tiredness

44%OF USERS

Adults who feel persistently exhausted or drained and want a quick, clear snapshot of their fatigue level.

Patients in active treatment

33%OF USERS

People managing chronic conditions or recovery who need to track fatigue changes to discuss with their clinician.

High-stress busy professionals

23%OF USERS

Workers juggling long hours, caregiving, or burnout concerns who want to check whether fatigue is affecting daily functioning.

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.

Fatigue Assessment Scale (FAS)

Average

29.5

Normal range

22.1 — 36.8

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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Trusted by 22k+ Users Worldwide

CLEAR ANSWERS TO COMMON QUESTIONS

Frequently Asked Questions

Any questions left?

What does this questionnaire measure?

It measures the severity of fatigue and how it affects daily functioning. It covers both physical tiredness and mental exhaustion.

How long does it take to complete?

Most people complete it in about 2 minutes. It includes 10 items.

What time period should responses reflect?

Answer based on how fatigue has been experienced in recent days. Use the response option that best fits overall experience, not an unusual single day.

How should items be answered when symptoms vary?

Select the option that reflects the typical level of fatigue. If unsure between two options, choose the one that is closer to the average experience.

How are the results used in care?

Scores support screening and follow-up by tracking changes over time. Results should be interpreted alongside clinical information and other findings.

WHAT THE TEST MEASURES

About This Assessment

Fatigue Assessment Scale (FAS) Test

fatigue

Fatigue is a common clinical complaint, and the Fatigue Assessment Scale (FAS) provides a brief self-report measure to quantify perceived fatigue severity in everyday life. It includes 10 items and typically takes about 2 minutes to complete. The items sample physical and cognitive aspects of fatigue to support a structured snapshot of symptom burden.

Developed by Trudie Chalder and David Chalder, the Fatigue Assessment Scale (FAS) may be used in clinical or research settings to support initial assessment and to track change over time alongside other clinical information; results should be interpreted in the context of the individual’s medical history, current symptoms, and functional status.

Author: David Chalder, Trudie Chalder

Literature: Piper, B. F., Dibble, S. L., Dodd, M. J., Weiss, M. C., Slaughter, R. E., & Paul, S. M. The revised Piper Fatigue Scale: Psychometric evaluation in women with breast cancer. Oncology Nursing Forum. 1998.; Michielsen, H. J., De Vries, J., & Van Heck, G. L. Psychometric qualities of a brief self-rated fatigue measure: The Fatigue Assessment Scale (FAS). Journal of Psychosomatic Research. 2003.

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