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BMI = weight (kg) ÷ height (m)2
About the BMI Calculator
The BMI Calculator works out your body mass index from your height and weight, in metric or imperial units, and shows which standard weight category it falls into.
BMI Calculator FAQ
How is BMI calculated?
BMI = weight in kg ÷ (height in m)². For 70 kg and 1.70 m, BMI is 70 ÷ 2.89 = 24.2.
What is a healthy BMI?
For most adults, a BMI from 18.5 to 24.9 is considered a healthy range, 25 to 29.9 overweight and 30 or above obese.
Is BMI accurate for everyone?
No. BMI does not measure body fat directly, so it can mislead for athletes, older adults and some ethnic groups. Use it as a general guide.