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BMI calculator

Your body mass index (BMI) is the number that relates your body weight to your height. Your BMI number gives a general indication if your weight falls within a healthy range. It is the most widely used measurement for obesity. The score is valid for both men and women but it does have some limits as it may (a) overestimate body fat in athletes and others who have a muscular build and (b) it may underestimate body fat in older persons and others who have lost muscle mass. Why not calculate your Body Mass Index with our simple 40-step BMI calculator?

Step 1 - Choose Metric or Imperial

I'd like to use Metric - weight in kilograms and grams, height in metres and centimetres
I'd like to use Imperial - weight in stones and pounds, height in feet and inches

Step 2 - Enter Your Weight

Kilograms

Step 3 - Enter Your Height

Centimetres

Step 4 - Calculate Your BMI

Your Results

Your Body Mass Index score is:
40 and over Extremely Obese
35 to 39.9 Very Obese
30 to 34.9 Obese
25 to 29.9 Overweight
18.5 to 25 Normal Weight
Under 18.5 Underweight

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