1. What is the Body Fat Percentage Formula?

The UK NHS Body Fat Percentage formula estimates body fat percentage using BMI, age, and gender. It provides a quick assessment of body composition based on easily measurable parameters.

2. How Does the Calculator Work?

The calculator uses the UK NHS formula:

Where:

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

Explanation: The equation accounts for the relationship between BMI, age, gender and body fat percentage, providing a simple estimation method.

3. Importance of Body Fat Calculation

Details: Monitoring body fat percentage is important for assessing health risks associated with obesity, tracking fitness progress, and maintaining overall health and wellness.

4. Using the Calculator

Tips: Enter BMI (calculated as weight in kg divided by height in meters squared), 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 this formula?
A: This formula provides a reasonable estimation but may not be as accurate as more advanced methods like DEXA scans or hydrostatic weighing.

Q2: What are healthy body fat percentages?
A: For men: 8-19% (athletes), 20-24% (fitness), 25%+ (obese). For women: 21-33% (athletes), 34-39% (fitness), 40%+ (obese).

Q3: When should I measure my body fat?
A: For consistent results, measure at the same time of day under similar conditions, preferably in the morning before eating or drinking.

Q4: Are there limitations to this formula?
A: This formula may be less accurate for athletes, elderly individuals, and those with unusual body compositions.

Q5: Should I use this for medical purposes?
A: For medical diagnosis and treatment, consult healthcare professionals who can use more precise measurement methods.