BMI Calculator Metric

Height in meters (ie 1.80m)
 
Weight in kg

BMI

 


Body Mass Index (BMI) is a simple index of weight-for-height that is commonly used to classify underweight, overweight and obesity in adults. It is defined as the weight in kilograms divided by the square of the height in metres (kg/m2).

Classification BMI(kg/m2)
Principal cut-off points Additional cut-off points
Underweight <18.50 <18.50
     Severe thinness <16.00 <16.00
     Moderate thinness 16.00 - 16.99 16.00 - 16.99
     Mild thinness 17.00 - 18.49 17.00 - 18.49
Normal range 18.50 - 24.99 18.50 - 22.99
23.00 - 24.99
Overweight ≥25.00 ≥25.00
     Pre-obese 25.00 - 29.99 25.00 - 27.49
27.50 - 29.99
     Obese ≥30.00 ≥30.00
          Obese class I 30.00 - 34.99 30.00 - 32.49
32.50 - 34.99
          Obese class II 35.00 - 39.99 35.00 - 37.49
37.50 - 39.99
          Obese class III ≥40.00 ≥40.00

Source : WHO

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BMI Calculator : kg, meters