The Science Behind BMI Calculations

Understanding BMI calculations helps you better interpret your health metrics. Learn how our BMI calculator works and what the results mean.

BMI Formula Explained:

- Metric: BMI = weight(kg) / height(m)²

- Imperial: BMI = 703 × weight(lb) / height(in)²

BMI Categories:

- Underweight: < 18.5

- Normal: 18.5-24.9

- Overweight: 25-29.9

- Obese: ≥ 30

Using the Calculator:

- Choose your unit system

- Enter accurate measurements

- Interpret results correctly