1. What is Body Fat Percentage?

Body fat percentage is the proportion of fat in your body compared to your total body weight. This calculator provides an estimation of body fat percentage specifically for women using BMI and age.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( BMI \) — Body Mass Index (kg/m²)
• \( age \) — Age in years

Explanation: The formula accounts for the relationship between BMI, age, and body fat percentage in women.

3. Importance of Body Fat Measurement

Details: Knowing your body fat percentage helps assess health risks associated with being underweight or overweight, and provides a more accurate picture of body composition than weight alone.

4. Using the Calculator

Tips: Enter your BMI in kg/m² and age in years. All values must be valid (BMI > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: Is this formula accurate for everyone?
A: This formula provides a general estimation for women. Individual results may vary based on factors like muscle mass and body type.

Q2: What are healthy body fat percentages for women?
A: Generally 21-33% is considered healthy for women aged 20-40, with slightly higher ranges for older women.

Q3: How often should I measure my body fat percentage?
A: For tracking changes, every 4-8 weeks is sufficient as body composition changes slowly.

Q4: Are there more accurate methods to measure body fat?
A: Yes, methods like DEXA scans, hydrostatic weighing, or skinfold calipers can provide more precise measurements.

Q5: Why is age a factor in the calculation?
A: Body composition naturally changes with age, typically resulting in higher body fat percentages even with similar BMI values.