1. What is BMI?

Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared. BMI provides a reliable indicator of body fatness for most people.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight \) — Body weight in kilograms (kg)
• \( height \) — Height in meters (m)

For weight loss percentile, the calculator compares your weight loss percentage against typical weight loss patterns in women.

3. Importance of BMI and Weight Loss Tracking

Details: BMI is used to screen for weight categories that may lead to health problems. Tracking weight loss percentile helps understand progress compared to others with similar starting points.

4. Using the Calculator

Tips: Enter weight in kg, height in meters. For weight loss tracking, provide your previous weight. Measurements should be recent for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI range?
A: For adults, 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 BMI?
A: BMI is a useful screening tool but doesn't directly measure body fat. Athletes may have high BMI due to muscle mass.

Q3: What does weight loss percentile mean?
A: It shows how your weight loss compares to other women with similar starting weights (e.g., 75th percentile means you've lost more than 75% of comparable women).

Q4: How often should I check my BMI?
A: Monthly checks are sufficient for most people. Daily weight fluctuations are normal and not meaningful.

Q5: Are there better measures than BMI?
A: For individuals, waist circumference and body fat percentage may provide additional useful information.