Body Fat Calculator

Body Fat Formula:

\[ BF\% = \frac{495}{D} - 450 \]

Gender:

Age:

years

Weight:

Height:

Body Fat Percentage:

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1. What is a Body Fat Calculator?

Definition: This calculator estimates body fat percentage based on gender, age, weight, and height measurements.

Purpose: It helps individuals assess their body composition and health status.

2. How Does the Calculator Work?

The calculator uses the following formulas:

\[ BMI = \frac{weight\ (kg)}{height^2\ (m)} \]

\[ Body\ Fat\% = (1.20 \times BMI) + (0.23 \times Age) - C \]

Where:

\( C \) — 16.2 for men, 5.4 for women
BMI — Body Mass Index

Explanation: The formula provides an estimate of body fat percentage based on population studies.

3. Importance of Body Fat Measurement

Details: Body fat percentage is a better health indicator than weight alone, helping assess fitness levels and health risks.

4. Using the Calculator

Tips: Enter your gender, age, weight in kg, and height in cm. All values must be valid numbers.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculator?
A: It provides a reasonable estimate (±3-5%) but professional methods like DEXA scans are more accurate.

Q2: What's a healthy body fat percentage?
A: For men: 8-19% (athletes), 20-25% (average). For women: 21-28% (athletes), 29-35% (average).

Q3: Why does gender affect the calculation?
A: Women naturally carry more essential body fat than men for biological reasons.

Q4: Can I use imperial units (lbs, inches)?
A: This calculator uses metric units for consistency. Convert lbs to kg (1 lb = 0.4536 kg) and inches to cm (1 in = 2.54 cm).

Q5: Does this work for athletes?
A: The formula may underestimate body fat for very muscular individuals.