1. What is the Deurenberg Formula?

The Deurenberg formula estimates body fat percentage from BMI, age, and gender. It provides a quick and convenient way to estimate body composition without specialized equipment.

2. How Does the Calculator Work?

The calculator uses the Deurenberg formula:

Where:

• \( BMI \) — Body Mass Index (unitless)
• \( age \) — Age in years
• \( sex \) — 1 for male, 0 for female

Explanation: The formula accounts for the relationship between BMI, age, gender and body fat percentage, with different coefficients for different demographic factors.

3. Importance of Body Fat Percentage

Details: Body fat percentage is a key indicator of overall health and fitness. It helps assess obesity risks, monitor fitness progress, and guide nutritional and exercise plans.

4. Using the Calculator

Tips: Enter BMI value (calculated from weight and height), age in years, and select gender. All values must be valid (BMI > 0, age between 1-120).

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the Deurenberg formula?
A: While convenient, it's an estimation and may not be as accurate as methods like DEXA scans or hydrostatic weighing, especially for athletes or elderly individuals.

Q2: What are healthy body fat percentage ranges?
A: For men: 6-24%, For women: 16-30%. Optimal ranges vary by age and fitness level.

Q3: How is BMI calculated?
A: BMI = weight (kg) / height² (m²). You need to calculate BMI separately before using this calculator.

Q4: Are there limitations to this formula?
A: Less accurate for very muscular individuals, elderly, and those with extreme body compositions. Does not account for fat distribution patterns.

Q5: Should this replace professional body composition analysis?
A: For precise measurements, professional methods like DEXA, BIA, or skinfold measurements are recommended.