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BMI Calculator
Your BMI
15 18.5 25 30 40
Underweight
< 18.5
Normal
18.5 - 24.9
Overweight
25 - 29.9
Obese
≥ 30
Note: BMI is a screening tool and may not be accurate for athletes, pregnant women, or elderly individuals. Please consult a healthcare professional for personalized health advice.
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How to Use the BMI Calculator
- Select your preferred unit system (Metric or Imperial)
- Enter your weight and height
- Click "Calculate BMI" to see your results
- View your BMI category and where you fall on the scale
Understanding BMI Categories
- Underweight (BMI < 18.5) - May indicate malnutrition or other health issues
- Normal (BMI 18.5-24.9) - Associated with lowest health risks
- Overweight (BMI 25-29.9) - May increase risk of certain health conditions
- Obese (BMI ≥ 30) - Higher risk of heart disease, diabetes, and other conditions
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Frequently Asked Questions
What is BMI?
BMI (Body Mass Index) is a measure of body fat based on height and weight. It's used as a screening tool to indicate whether a person has a healthy body weight.
How is BMI calculated?
BMI = weight (kg) / height (m)^2. For imperial units, BMI = (weight in pounds × 703) / (height in inches)^2.
What's a healthy BMI range?
A BMI of 18.5 to 24.9 is considered healthy. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.
Is BMI accurate for everyone?
BMI is a general indicator and may not be accurate for athletes, elderly, or people with high muscle mass. Consult a healthcare provider for personalized advice.