Fatigue Severity Scale Calculator

Complete this validated 9-question assessment to evaluate fatigue severity and get personalized recommendations.

The Fatigue Severity Scale (FSS) is a widely used, validated screening tool that helps identify and measure the severity of fatigue symptoms. Answer 9 simple questions to determine your fatigue level.

Example Scenarios

Click on any example to load it into the calculator.

Minimal Fatigue

Minimal Fatigue

Normal fatigue levels with minimal impact on daily life.

Motivation: 2

Exercise Fatigue: 1

Easy Fatigue: 2

Physical Functioning: 1

Frequent Problems: 1

Sustained Functioning: 1

Duties & Responsibilities: 1

Disabling Symptoms: 1

Work/Family/Social: 1

Total Score: 11

Mean Score: 1.22

Fatigue Level: Minimal Fatigue

Mild Fatigue

Mild Fatigue

Some fatigue symptoms requiring monitoring.

Motivation: 3

Exercise Fatigue: 4

Easy Fatigue: 4

Physical Functioning: 3

Frequent Problems: 3

Sustained Functioning: 3

Duties & Responsibilities: 3

Disabling Symptoms: 2

Work/Family/Social: 3

Total Score: 28

Mean Score: 3.11

Fatigue Level: Mild Fatigue

Moderate Fatigue

Moderate Fatigue

Significant fatigue symptoms requiring attention.

Motivation: 5

Exercise Fatigue: 5

Easy Fatigue: 5

Physical Functioning: 5

Frequent Problems: 5

Sustained Functioning: 5

Duties & Responsibilities: 5

Disabling Symptoms: 4

Work/Family/Social: 5

Total Score: 44

Mean Score: 4.89

Fatigue Level: Moderate Fatigue

Severe Fatigue

Severe Fatigue

High fatigue levels requiring professional evaluation.

Motivation: 7

Exercise Fatigue: 7

Easy Fatigue: 7

Physical Functioning: 7

Frequent Problems: 7

Sustained Functioning: 7

Duties & Responsibilities: 7

Disabling Symptoms: 6

Work/Family/Social: 7

Total Score: 62

Mean Score: 6.89

Fatigue Level: Severe Fatigue

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