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Free BMI calculator for adults. Enter weight and height in metric or imperial units to see your body mass index, category and healthy weight range.
Enter your values and select Calculate to see the result.
Body mass index is a quick screening measure that relates weight to height. Health professionals use it as one of several signals, not as a diagnosis.
Choose metric or imperial units and enter your weight and height. The calculator shows your BMI, the adult category and the weight range that corresponds to a healthy BMI for your height. BMI does not measure body fat, so it can mislead for athletes, older adults and others. This is general information, not medical advice.
BMI = weight (kg) ÷ height (m)²
70 kg at 175 cm gives a BMI of 22.9, which is in the healthy range for adults.
Body mass index is your weight in kilograms divided by your height in metres squared. It is a quick screening number, not a diagnosis.
For adults, the World Health Organization uses: below 18.5 underweight, 18.5 to 24.9 healthy weight, 25 to 29.9 overweight and 30 or more obesity.
BMI does not measure body fat or where it is carried. It can be misleading for athletes with high muscle mass, older adults, pregnant women and some ethnic groups. It is not for children, who use age-based charts.
No. It is general information only. Speak to a doctor or qualified health professional about your weight and health.