def calculate_bmi(weight_kg, height_m):
    """
    Calculate Body Mass Index (BMI) for women
    :param weight_kg: weight in kilograms
    :param height_m: height in meters
    :return: BMI value rounded to 1 decimal place
    """
    bmi = weight_kg / (height_m ** 2)
    return round(bmi, 1)

# Example usage:
weight = 65  # kg
height = 1.68  # meters
bmi_result = calculate_bmi(weight, height)
print(f"BMI: {bmi_result} kg/m²")
                        

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. It provides a numeric measure of a person's thickness or thinness.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

Explanation: The calculation divides weight by the square of height to account for the fact that weight increases with the square of height.

3. BMI Categories

Standard BMI Categories:

• Underweight: BMI < 18.5
• Normal weight: BMI 18.5-24.9
• Overweight: BMI 25-29.9
• Obesity: BMI ≥ 30

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For accuracy, measure weight in the morning after using the bathroom and before eating.

5. Frequently Asked Questions (FAQ)

Q1: Is BMI different for women and men?
A: The calculation is the same, but interpretation may differ slightly as women typically have higher body fat percentages at the same BMI.

Q2: What are limitations of BMI?
A: BMI doesn't distinguish between muscle and fat, so athletes may have high BMI without excess fat. It also doesn't account for fat distribution.

Q3: How accurate is BMI for older women?
A: Less accurate as muscle mass decreases with age. Waist circumference may be a better indicator.

Q4: Should pregnant women use BMI?
A: Standard BMI calculations aren't applicable during pregnancy due to expected weight gain.

Q5: What's a healthy BMI range for women?
A: Generally 18.5-24.9, but optimal range may vary based on individual factors.