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 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)

Explanation: BMI is calculated by dividing weight in kilograms by the square of height in meters.

3. Importance of BMI Calculation

Details: BMI is a simple, inexpensive screening method for weight category—underweight, healthy weight, overweight, and obesity. It helps assess risk for diseases that can occur with more body fat.

4. Using the Calculator

Tips: Enter weight in kilograms, height in meters. For women, BMI interpretation may vary slightly by age. All values must be valid (weight > 0, height > 0).

5. Frequently Asked Questions (FAQ)

Q1: What is a healthy BMI for women?
A: For most adult women, a BMI between 18.5 and 24.9 is considered healthy. However, ideal BMI may vary slightly with age.

Q2: Does BMI differ by age for women?
A: Yes, slightly. Older women may have a slightly higher healthy BMI range (up to 27) compared to younger women.

Q3: What are the 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.

Q4: How often should I check my BMI?
A: For most adults, checking BMI every 6-12 months is sufficient unless you're actively trying to lose or gain weight.

Q5: Is BMI accurate during pregnancy?
A: No, BMI calculations are not valid during pregnancy as weight gain is expected and necessary for healthy fetal development.