1. What is BMI?

Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women. For New Zealand women, the same formula is used but with gender-specific interpretation guidelines.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight_{kg} \) — Weight in kilograms
• \( height_{m} \) — Height in meters

Explanation: The formula calculates body mass index by dividing weight in kilograms by the square of height in meters.

3. Importance of BMI Calculation

Details: BMI provides a quick screening tool for weight categories that may lead to health problems. For New Zealand women, it helps identify potential weight-related health risks.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. Ensure accurate measurements for precise results. All values must be valid (weight > 0, height > 0).

5. Frequently Asked Questions (FAQ)

Q1: What are the BMI categories for New Zealand women?
A: Underweight (<18.5), Normal weight (18.5-24.9), Overweight (25-29.9), Obese (≥30).

Q2: Is BMI accurate for all body types?
A: BMI may not accurately reflect body fat in athletes, elderly, or those with high muscle mass as it doesn't distinguish between muscle and fat.

Q3: Should pregnant women use this calculator?
A: No, BMI calculations are not appropriate during pregnancy as weight gain is expected and necessary.

Q4: What is a healthy BMI range for New Zealand women?
A: A BMI between 18.5 and 24.9 is generally considered healthy for adult women.

Q5: Are there ethnic considerations for BMI interpretation?
A: Yes, some ethnic groups may have different health risk thresholds. Consult healthcare providers for personalized assessment.