General

BMI Calculator

Calculate Body Mass Index based on height and weight.

Parameters

BMI Calculator Result

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FormulaBMI = Weight (kg) / Height (m)²

Clinical Pearls

BMI is an inexpensive and easy screening method for weight category—underweight, healthy weight, overweight, and obesity. BMI does not measure body fat directly, but it is moderately correlated with more direct measures of body fat.

Normal Values / Reference

Normal healthy weight is defined as a BMI between 18.5 and 24.9 kg/m².

Limitations

BMI may overestimate body fat in athletes and others who have a muscular build. It may underestimate body fat in older persons and others who have lost muscle.