BMI Calculator
Body Mass Index with healthy weight range, BMI Prime, and visual gauge.
Results
BMI is a screening tool, not a diagnostic measure. Athletes and muscular individuals may have elevated BMI despite healthy body composition. Waist-to-height ratio (WHtR) is considered a stronger predictor of health risks — keep it below 0.5 for optimal health.
How to Interpret Your BMI Result
Body Mass Index (BMI) is a simple numerical value based on your height and weight. It is used world-wide as a screening tool to determine if a person is in a healthy weight range or at risk for developing chronic health conditions.
The Importance of Weight Categorization
Maintaining a healthy weight is key to overall longevity. Our BMI calculator and gauge help you quickly visualize where you fall on the World Health Organization's (WHO) classification scale.
Limitations of BMI
Remember that BMI is only one part of your health picture. It doesn't distinguish between muscle and fat. If you are extremely muscular or an elite athlete, your BMI might suggest you are overweight when you are actually quite fit. Consider using our Body Fat Calculator or Ideal Weight Calculator for a secondary measurement.
Frequently Asked Questions
BMI = weight(kg) / height(m)². A BMI of 18.5-24.9 is normal. It's a screening tool, not a diagnostic measure.
BMI may overestimate body fat in muscular people. Waist-to-height ratio is a better health indicator.