BMI Calculator
Calculating…
The formula
BMI = weight in kilograms ÷ height in meters squared. A person of 70 kg and 175 cm has a BMI of 70 ÷ 1.75² = 22.9.
Adult categories
- Below 18.5: underweight.
- 18.5 to 24.9: healthy weight.
- 25.0 to 29.9: overweight.
- 30.0 and above: obesity.
What BMI does not tell you
BMI is a screening number, not a diagnosis. It does not separate muscle from fat, and it is not interpreted the same way for children, teenagers, pregnant women or older adults. Talk to a health professional about what is right for you.