How to use this calculator
- Enter body weight in kilograms.
- Enter height in centimeters.
- Read the calculated BMI and adult screening category.
Example
At 70 kg and 175 cm, BMI is approximately 22.9.
How it works
BMI equals weight in kilograms divided by height in meters squared. Adult categories follow the CDC screening ranges. BMI is one indicator and should be considered with other health factors.
Adult BMI category reference: CDC
Frequently asked questions
Who is this calculator for?
It is intended for adults aged 20 and older. Children and teenagers require age- and sex-specific BMI percentiles.
Is BMI a diagnosis?
No. BMI is a screening measure and is not a substitute for professional medical advice.
What ranges are used?
Below 18.5, 18.5 to below 25, 25 to below 30, and 30 or above.