BMI Calculator
Understand your body mass index with a simple starting point.
Your measurements
Choose your preferred units and enter your height and weight.
Your body mass index
BMI
For adults 20 and older. BMI is a screening measure, not a diagnosis; it does not account for muscle mass or pregnancy. Consult a healthcare professional for personal advice.
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Behind the numbers
Body mass index compares weight with height. Adult reference categories are underweight (below 18.5), healthy weight (18.5 to below 25), overweight (25 to below 30), and obesity (30 or above). It is only one part of assessing health.