Measure your weight in kilograms or pounds
Measure your height in meters, centimeters, inches, or feet
Use the BMI formula: weight in kilograms divided by height in meters squared
If using pounds and inches, use the formula: BMI = (weight in pounds × 703) ÷ height in inches squared
Calculate the result
Compare the result with BMI categories:
Underweight: below 18.5
Normal weight: 18.5 to 24.9
Overweight: 25.0 to 29.9
Obesity: 30.0 and above
Use a BMI calculator if needed
Consult a healthcare professional for interpretation if necessary