Enter your height to see the healthy weight range for it, and the weights that fall in each BMI category.
The healthy weight range comes from body mass index, or BMI, which is weight divided by height squared. An adult aged 18 or older with a BMI from 18.5 up to 25 is usually described as having a healthy weight. To turn that into weights for your height, the calculator multiplies the square of your height in meters by 18.5 for the low end and by 25 for the high end.
Below 18.5 is underweight. From 25 to 30 is overweight, and 30 or more is obese, which is often split into class I from 30 to 35, class II from 35 to 40 and class III from 40 up. The table lists the weight that marks each boundary for your height, so you can see how far you are from the healthy range.
BMI only looks at height and weight. It does not know how much of your weight is muscle, bone or fat, where the fat is carried, or your age, family history and fitness. A muscular person may be in the overweight range and still be healthy, and someone in the healthy range can still have too much body fat. It works best for adults, and children need charts for their age.
It is the weight that gives a BMI from 18.5 to 25. Enter your height and the calculator shows that range in kilograms or pounds.
Square your height in meters and multiply by 18.5 for the lowest healthy weight and by 25 for the highest.
The standard adult BMI categories are the same for both. Women often carry more body fat at the same BMI, so body fat measures can add useful detail.
No. For children and teenagers, weight status is judged against growth charts for their age and sex. This range is meant for adults aged 18 or older.
Yes, it is possible, for example if you are very muscular. BMI is a screening tool, so a doctor looks at other measures too.
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