BMI Calculator
Calculate your Body Mass Index (BMI) instantly with metric or imperial units. Find your healthy weight range.
What is BMI?
Body Mass Index (BMI) is a widely used screening tool that estimates body fat based on height and weight. It is calculated by dividing weight in kilograms by the square of height in meters (kg/m²). BMI categories: Underweight (below 18.5), Normal weight (18.5–24.9), Overweight (25–29.9), and Obese (30 and above). While BMI is a useful general indicator, it does not directly measure body fat percentage and should be used alongside other health assessments.
FAQ
- What is a healthy BMI range?
- A BMI between 18.5 and 24.9 is considered normal or healthy weight. A BMI below 18.5 is underweight, 25–29.9 is overweight, and 30 or above is classified as obese.
- Is BMI accurate for everyone?
- BMI is a general screening tool and may not be accurate for athletes (who have high muscle mass), elderly people (who may have low muscle mass), pregnant women, or certain ethnic groups. Always consult a healthcare professional for a comprehensive assessment.
- How do I calculate BMI in imperial units?
- In imperial units, BMI = (weight in pounds × 703) ÷ (height in inches)². Our calculator handles this conversion automatically when you select the Imperial tab.
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