Obesity Staging Calculator
Determine the severity of obesity using the Edmonton Obesity Staging System (EOSS) based on BMI, comorbidities, and functional limitations.
How to Use This Calculator
- Enter your height in centimeters and weight in kilograms
- Check all comorbidities you have been diagnosed with
- Select your level of functional limitations
- Check any additional risk factors that apply
- Click Calculate to see your obesity stage and health risk assessment
Formula Used
BMI = weight (kg) / [height (m)]²
Edmonton Obesity Staging System (EOSS):
- Stage 0: No obesity-related risk factors
- Stage 1: Presence of subclinical risk factors, mild symptoms
- Stage 2: Established obesity-related chronic diseases
- Stage 3: Established end-organ damage
- Stage 4: Severe, potentially disabling chronic diseases
Example Calculation
Real-World Scenario:
A 45-year-old individual with obesity who wants to understand their health risk level.
Given:
- Height = 175 cm
- Weight = 95 kg
- Comorbidities = Type 2 Diabetes, Hypertension
- Functional Limitations = Mild
Calculation:
BMI = 95 kg / (1.75 m)² = 31.0 kg/m² (Class I Obesity)
With established comorbidities (diabetes, hypertension) and mild functional limitations, the EOSS stage is 2.
Result: Obesity Stage 2 with moderate health risk, requiring medical intervention and lifestyle changes.
Why This Calculation Matters
Practical Applications
- Guides treatment intensity and approach
- Helps prioritize health interventions
- Predicts future health complications
- Monitors progression or improvement
Key Benefits
- More comprehensive than BMI alone
- Focuses on health rather than just weight
- Provides actionable health information
- Helps set realistic health goals
Common Mistakes & Tips
Frequently Asked Questions
References & Disclaimer
Medical Disclaimer
This calculator provides an estimate of obesity staging based on the Edmonton Obesity Staging System. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
References
- The Edmonton Obesity Staging System: A New Tool for Bariatric Surgery Patient Selection - Sharma AM, Kushner RF. Obesity Surgery. 2009.
- Canadian Clinical Practice Guidelines for the Management of Obesity - Canadian Medical Association Journal. 2020.
- Obesity and Overweight Fact Sheet - World Health Organization. 2021.
Accuracy Notice
This calculator provides an estimate based on self-reported information. For accurate staging, a comprehensive medical evaluation by a healthcare professional is necessary. The staging system may not account for all individual health factors or rare conditions.
About the Author
Kumaravel Madhavan
Web developer and data researcher creating accurate, easy-to-use calculators across health, finance, education, and construction and more. Works with subject-matter experts to ensure formulas meet trusted standards like WHO, NIH, and ISO.