Body Mass Index Calculator
Calculate your BMI to assess your weight category and potential health risks
BMI Calculator
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Understanding Your BMI
What is BMI?
Body Mass Index (BMI) is a tool used to estimate a person's body fat based on their height and weight. It provides a simple numerical measure that allows health professionals and individuals to categorize weight status—ranging from underweight to obese.
How It's Calculated
BMI is calculated by dividing an individual's weight in pounds (lbs) by the square of their height in inches (in²). The formula for BMI is:
BMI = (Weight in pounds) / (Height in inches)²
For metric measurements: BMI = (Weight in kg) / (Height in meters)²
Limitations of BMI
While BMI is a useful tool, it has limitations:
- Does not directly measure body fat percentage
- Doesn't distinguish between fat mass and muscle mass
- Athletes may have high BMI without high body fat
- May not accurately reflect health status of elderly
- Doesn't account for body fat distribution
It's important to use BMI as part of a broader health assessment including lifestyle factors, diet, and physical activity.
Health Recommendations
For underweight individuals: Focus on nutrient-dense foods and strength training to build muscle mass.
For healthy weight individuals: Maintain balanced nutrition and regular physical activity.
For overweight individuals: Consider gradual weight loss through diet modifications and increased exercise.
CDC Resources
Centers for Disease Control and Prevention - Body Mass Index information
Visit CDC BMI ResourcesWHO Resources
World Health Organization - Obesity and overweight information
Visit WHO Obesity Resources