1. What is BMI?

Body Mass Index (BMI) is a simple index of weight-for-height that is commonly used to classify underweight, normal weight, overweight and obesity in adults. It is calculated by dividing a person's weight in kilograms by the square of their height in meters.

2. How Does the Calculator Work?

The calculator uses the following formulas:

For calorie calculation (Mifflin-St Jeor Equation):

Then adjusted for activity level and goal (loss/maintain/gain).

3. Importance of BMI and Calorie Calculation

Details: BMI provides a simple numeric measure of body fatness. Calorie calculation helps in planning weight management strategies for muscle gain, weight loss or maintenance.

4. Using the Calculator

Tips: Enter weight in kg, height in meters, select your fitness goal and activity level. For accurate results, measure your weight in the morning before eating.

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI range?
A: 18.5-24.9 is considered normal weight. Below 18.5 is underweight, 25-29.9 is overweight, and 30+ is obese.

Q2: How accurate is the calorie calculation?
A: It provides a good estimate but individual variations exist. Adjust based on your actual weight changes over time.

Q3: How often should I recalculate?
A: Recalculate BMI monthly if actively trying to change weight. Recalculate calories if your weight changes by more than 5kg.

Q4: Are there limitations to BMI?
A: BMI doesn't distinguish between muscle and fat. Very muscular people may have high BMI without excess fat.

Q5: What's the best way to lose weight?
A: Combine calorie deficit with strength training and cardio for sustainable fat loss while preserving muscle.