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BMI Formula (Imperial Units):
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Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women. It provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems more objectively with their patients.
The calculator uses the BMI formula for imperial units:
Where:
Explanation: The formula calculates body mass index by dividing weight in pounds by height in inches squared, then multiplying by the conversion factor 703 to adjust for imperial units.
Details: BMI is widely used as a screening tool to identify possible weight problems in adults. While it doesn't measure body fat directly, research has shown that BMI correlates with direct measures of body fat and can be used as an alternative to more expensive and difficult methods.
Tips: Enter weight in pounds and height in inches. Make sure measurements are accurate for the most reliable results. The calculator will provide your BMI number and corresponding weight category.
Q1: What Are The Standard BMI Categories?
A: Underweight (BMI < 18.5), Normal weight (18.5-24.9), Overweight (25-29.9), and Obese (30 and above).
Q2: Is BMI Accurate For Everyone?
A: BMI may not be accurate for athletes with high muscle mass, pregnant women, children, or the elderly as it doesn't distinguish between muscle and fat.
Q3: What's The Difference Between Imperial And Metric BMI Formulas?
A: Metric formula is weight(kg)/height²(m), while imperial uses the conversion factor 703 to account for pounds and inches.
Q4: How Often Should I Check My BMI?
A: For most adults, checking every 3-6 months is sufficient unless you're actively trying to change your weight.
Q5: Can BMI Be Used For Children?
A: No, BMI calculations for children use percentiles based on age and gender rather than fixed categories.