BMI Formula:
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Body Mass Index (BMI) is a simple calculation using a person's height and weight to screen for weight categories that may lead to health problems. It provides a reliable indicator of body fatness for most people.
The calculator uses the BMI formula:
Where:
Explanation: The equation divides weight by the square of height to account for the fact that weight increases with the square of height.
Details: BMI helps identify potential weight problems in adults. It's used to screen for weight categories that may lead to health problems but is not diagnostic of body fatness or health.
Tips: Enter weight in kilograms and height in meters. For pounds and inches, convert first (1 kg = 2.2 lbs, 1 m = 39.37 inches).
Q1: What is a healthy BMI range?
A: For adults: Under 18.5 (underweight), 18.5-24.9 (healthy), 25-29.9 (overweight), 30+ (obese).
Q2: How many calories should I eat to lose weight?
A: Typically 500 calories less than maintenance per day for gradual weight loss (about 0.5kg/week).
Q3: Are there limitations to BMI?
A: BMI doesn't account for muscle mass, bone density, or fat distribution. Athletes may have high BMI without excess fat.
Q4: Is this calculator only for women?
A: While focused on women, the BMI calculation works for all adults. Calorie estimates may differ for men.
Q5: How accurate is the calorie estimate?
A: It's a rough estimate. Actual needs vary by activity level, metabolism, and other factors.