What is BMI?
Body Mass Index (BMI) is a simple calculation using height and weight to estimate body fat. The formula is: BMI = weight (kg) / height (m)². It provides a quick screening tool used by healthcare professionals worldwide.
BMI Categories
- Underweight: Below 18.5
- Normal weight: 18.5 - 24.9
- Overweight: 25 - 29.9
- Obese: 30 and above
Limitations of BMI
- Doesn't Distinguish Muscle from Fat: Athletes may have "overweight" BMIs despite low body fat
- Age and Sex Variations: BMI doesn't account for body composition changes
- Fat Distribution: Where you carry fat matters more than total amount
Better Health Indicators
- Waist circumference: Direct measure of abdominal fat
- Body fat percentage: More accurate body composition measure
- Blood pressure, cholesterol: Direct health markers
Conclusion
BMI is a useful screening tool but has important limitations. Use our free BMI calculator for instant results with category explanations.
Try This Tool
Put what you learned into practice with our free tool.
