BMI Calculator
Check your Body Mass Index with support for common height and weight units.
Frequently Asked Questions
How is BMI calculated?
BMI = weight (kg) / height² (m²). In imperial: BMI = (weight in lbs / height in inches²) × 703.
What is a healthy BMI range?
Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese: 30 and above.
Is BMI an accurate measure of health?
BMI doesn't account for muscle mass, age, or fat distribution. Athletes may show high BMI despite being very healthy. It's a screening tool, not a diagnosis.