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BMI and Calorie Deficit Formula:
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Body Mass Index (BMI) is a measure of body fat based on height and weight. Calorie deficit represents the amount of calories you need to reduce from your daily intake to lose weight, with 500 kcal/day being a common recommendation for sustainable weight loss.
The calculator uses the following formulas:
Where:
Explanation: BMI provides an indicator of body fatness, while a 500 kcal/day deficit typically results in about 0.5 kg of weight loss per week.
Details: Calculating BMI helps assess weight categories and potential health risks. Understanding calorie deficit is crucial for effective and sustainable weight management strategies.
Tips: Enter weight in kilograms and height in meters. All values must be valid (weight > 0, height > 0). The calculator will provide your BMI and recommended daily calorie deficit.
Q1: What is a healthy BMI range?
A: For adults, a BMI between 18.5 and 24.9 is considered normal weight. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.
Q2: Why 500 kcal/day deficit?
A: A 500 kcal/day deficit typically results in about 0.5 kg (1 lb) of weight loss per week, which is considered a safe and sustainable rate.
Q3: Are there limitations to BMI?
A: BMI doesn't distinguish between muscle and fat, so it may not accurately reflect body composition in athletes or elderly individuals.
Q4: Should everyone use a 500 kcal deficit?
A: Individual calorie needs vary based on factors like age, gender, activity level, and metabolic health. Consult a healthcare professional for personalized advice.
Q5: How accurate is this calculator?
A: The calculator provides estimates based on standard formulas. For precise weight management guidance, consult with a registered dietitian or healthcare provider.