BMI Calculator

What Is BMI?

Body Mass Index (BMI) is a simple screening method used by healthcare professionals worldwide to assess whether your weight is healthy for your height. It's calculated by dividing your weight by the square of your height, providing a quick snapshot of your body composition.

How to Calculate BMI

BMI calculation is straightforward. For metric units, the formula is: Weight (kg) ÷ Height² (m²). For imperial units, it's: (Weight (lb) ÷ Height² (in²)) × 703. Our calculator handles both systems automatically, allowing you to use kg, lb, cm, or inches based on your preference.

Why BMI Matters for Your Health

Maintaining a healthy BMI is associated with reduced risk of chronic diseases including type 2 diabetes, heart disease, high blood pressure, and joint problems. While BMI isn't perfect, it's a valuable starting point for health assessment and monitoring weight changes over time.

Is BMI Accurate?

BMI is a screening tool, not a diagnostic measure. It works well for most adults but has limitations. Athletes and people with high muscle mass may have elevated BMI despite low body fat. Similarly, older adults may have normal BMI but higher body fat. For a complete health assessment, consult with a healthcare provider who can consider other factors like waist circumference, muscle mass, and overall fitness level.

Understanding Your BMI Results

Once you calculate your BMI, you'll receive a category: Underweight (below 18.5), Normal weight (18.5-24.9), Overweight (25-29.9), or Obese (30 and above). These categories help identify potential health risks, but remember that individual health depends on many factors beyond just BMI.