Convert height to meters if needed
Convert weight to kilograms if needed
Use the formula: BMI = weight in kg ÷ (height in m × height in m)
Square the height in meters
Divide the weight by the squared height
Example: 70 kg and 1.75 m
Calculate: 1.75 × 1.75 = 3.0625
Calculate: 70 ÷ 3.0625 = 22.9
BMI = 22.9