BMI Calculator Guide: Understanding Your Healthy Weight
Learn what BMI means, how it is calculated, and what your BMI number tells you about your health.
What Is BMI
Body Mass Index (BMI) is a simple measure that uses your height and weight to estimate whether you are underweight, normal weight, overweight, or obese. It is calculated by dividing weight in kilograms by height in meters squared.
BMI Categories
BMI below 18.5 is considered underweight. Between 18.5 and 24.9 is normal weight. Between 25 and 29.9 is overweight. Above 30 is classified as obese. These ranges apply to most adults.
Limitations of BMI
BMI does not distinguish between muscle and fat mass. Athletes may have high BMIs despite being healthy. Age, gender, and ethnicity also affect what constitutes a healthy BMI. It should be used as a screening tool, not a diagnostic one.
Using a BMI Calculator
Online BMI calculators support both metric and imperial units. Enter your weight and height to get instant results with category classification and healthy weight range recommendations.
Conclusion
BMI is a useful starting point for understanding your weight status. Free online calculators make it easy to check your BMI and learn about healthy weight ranges.