Obesity Staging Calculator

The Obesity Staging Calculator estimates your Edmonton Obesity Staging System (EOSS) stage and Body Mass Index (BMI) based on height, weight, and health history. This tool helps patients and healthcare providers assess the severity of obesity-related health risks beyond simple weight numbers. Whether you are planning a lifestyle change, evaluating surgery options, or tracking chronic conditions, this guide clarifies your clinical status.

Enter height in centimeters (cm)
Enter weight in kilograms (kg)


How Obesity Staging Is Calculated

Obesity Staging combines your Body Mass Index (BMI) with an assessment of your physical health to determine your specific risk level. First, we calculate your BMI using the standard metric formula. Then, the tool analyzes your comorbidities, such as type 2 diabetes or hypertension, alongside your functional limitations.

BMI = weight (kg) / [height (m)]²

Where:

  • weight is measured in kilograms
  • height is measured in meters

By comparing your BMI against the presence and severity of medical conditions, the calculator assigns an Edmonton Obesity Staging System stage from 0 to 4. This method is clinically preferred over weight alone because it accounts for individual health variations.

What Your Obesity Staging Means

Your result indicates how significantly your weight impacts your overall health and daily function. Understanding your stage helps you prioritize the right medical interventions and lifestyle changes.

Prevention Focus (Stage 0-1)

If you have no signs of risk factors or mild subclinical issues, your goal is prevention. Maintain a balanced diet and regular exercise to stop disease progression before it starts.

Disease Management (Stage 2-3)

With established chronic diseases or moderate limitations, structured intervention is key. You should work closely with your healthcare provider to manage conditions like sleep apnea or joint pain actively.

Specialist Intervention (Stage 4)

If you have severe limitations or organ damage, immediate and aggressive treatment is necessary. This often requires bariatric surgery evaluation or specialized care to prevent further health decline.

Disclaimer: This tool is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider regarding your specific medical condition.

Reassess your staging regularly, especially if you experience new symptoms or significant changes in your physical abilities.