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BMI Calculator

Calculate your Body Mass Index to determine your weight category and health status.

BMI Calculator

BMI Result

Your BMI
BMI input

Understanding Your BMI

Body Mass Index (BMI) is a simple measurement that helps you understand if your weight is healthy for your height. It’s commonly used by health professionals to classify underweight, normal weight, overweight, and obesity in adults.

Metric Formula: BMI = weight (kg) ÷ [height (m)]²
Imperial Formula: BMI = 703 × weight (lbs) ÷ [height (in)]²

BMI Categories:

  • Underweight: < 18.5
  • Normal: 18.5 – 24.9
  • Overweight: 25 – 29.9
  • Obese: ≥ 30

Keep in mind that BMI doesn’t measure body fat directly, so athletes or muscular individuals may have a high BMI even though they are healthy.

BMI – History