How does this tool work?
BMI is calculated by dividing weight in kilograms by the square of height in meters. For example, a person weighing 70 kilograms and 170 centimeters tall has a BMI of about 24.2, which is within the normal range.
BMI is a general screening tool, not a diagnosis. It does not tell muscle from fat, and may not suit athletes, older adults, pregnant women, or children. Treat it as a starting point for a conversation with your doctor, not a final verdict on your health.
Frequently asked questions
What is a normal BMI?
A range of 18.5 to 24.9 is generally considered normal for adults. Below that points to underweight, 25 to 29.9 to overweight, and 30 and above to obesity. But these are general categories that a doctor interprets for your situation.
Is BMI accurate for everyone?
No. BMI does not distinguish muscle from fat, so it can be misleading for muscular athletes, and it may not suit older adults, pregnant women, or children. It is a general indicator, not a substitute for a doctor's assessment.
Does BMI measure body fat percentage?
No, BMI does not measure body fat directly, it only compares weight to height. For a more accurate assessment, a doctor may use other measures such as waist circumference.