Body Mass Index (BMI) Calculator
Use this calculator to determine your Body Mass Index (BMI) and see if you are in a healthy weight range for your height. BMI is a widely used indicator of whether you have a healthy weight relative to your height.
Understanding Your BMI
Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m2, where kg is a person's weight in kilograms and m2 is their height in metres squared. For imperial units, the formula is BMI = (weight in lbs / (height in inches)2) * 703.
A high BMI can indicate high body fatness. BMI screens for weight categories that may lead to health problems, but it does not diagnose the body fatness or health of an individual.
BMI Categories:
- Underweight: Less than 18.5
- Normal weight: 18.5 – 24.9
- Overweight: 25 – 29.9
- Obesity: BMI of 30 or greater
Limitations of BMI:
While BMI is a useful screening tool, it has limitations:
- It may overestimate body fat in athletes and others with a muscular build.
- It may underestimate body fat in older persons and others who have lost muscle mass.
- It does not distinguish between fat mass and muscle mass.
- It does not account for body composition, fat distribution, or ethnic differences.
For a more comprehensive assessment of health risks, consult with a healthcare professional who can consider other factors such as waist circumference, diet, physical activity, and family history.
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