BMI Calculator
Find your body mass index from height and weight, in metric or imperial units, with the standard weight category. Free and instant.
Independently verified for accuracy
- BMI
- 24.69
- Category
- Normal weight
Find your body mass index from your height and weight, in metric or imperial units, and see which standard weight category it falls in. A quick screening number for anyone tracking weight against a recognized reference range.
How this is calculated
BMI is weight in kilograms divided by height in metres squared (imperial uses 703 times pounds over inches squared), and the category labels follow the World Health Organization adult BMI ranges.
How to use
- Pick metric (kg, cm) or imperial (lb, in) units.
- Enter your weight and height.
- Read your BMI and the weight category it falls in.
Examples
- 80 kg, 180 cm:
BMI 24.69, Normal weight - 220 lb, 68 in:
BMI 33.45, Obesity
FAQ
- How is BMI calculated?
- In metric units BMI is weight in kilograms divided by height in metres squared. In imperial units it is 703 times weight in pounds divided by height in inches squared.
- What are the BMI categories?
- Under 18.5 is underweight, 18.5 to 24.9 is normal weight, 25 to 29.9 is overweight, and 30 or above is in the obesity range. These are the World Health Organization adult ranges.
- Is BMI accurate for everyone?
- BMI is a quick screening number, not a body composition measurement. It does not separate muscle from fat, so very muscular people can read high. Use it as a starting point, not a diagnosis.