Looking for a bmi calculator with height in cm and weight in kg? This free tool gives you your BMI, WHO category and the healthy weight range for your height. Just enter your numbers and press Calculate — results are instant.
BMI (Body Mass Index) is weight divided by height squared, with weight in kilograms and height in metres. The World Health Organization classes a BMI under 18.5 as underweight, 18.5 to 24.9 as normal weight, 25 to 29.9 as overweight, and 30 or above as obese. It is a quick screening number, not a diagnosis: it does not separate muscle from fat, so very muscular people can score high while being healthy.
Example: Height 175 cm · Weight 75 kg
Your BMI: 24.5
The WHO classes a BMI under 18.5 as underweight, 18.5 to 24.9 as normal weight, 25 to 29.9 as overweight, and 30 or above as obese. This calculator shows your category and the healthy weight range for your height.
Yes — BMI does not separate muscle from fat. A very muscular person can have a high BMI while being healthy, and an older person can have a normal BMI while carrying too much fat. Use it as a screening number, and look at waist size and overall health too.
No, not this way. Children's BMI is judged against age and sex growth charts, not the adult cut-offs. This calculator is for adults.
Small lasting changes work best: a little less food, a little more movement, and patience. If your BMI is well above the healthy range, or you have other health concerns, talk to a doctor before starting a diet.