1. What is Body Fat Percentage Calculator?

Definition: This calculator estimates body fat percentage based on weight, height, and a constant factor.

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

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( BF \) — Body fat percentage (%)
• \( W \) — Weight (kg)
• \( H \) — Height (m)
• \( k \) — Constant factor (dimensionless)

Explanation: The weight is divided by height squared (similar to BMI calculation), then multiplied by a constant factor to estimate body fat percentage.

3. Importance of Body Fat Percentage

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

4. Using the Calculator

Tips: Enter your weight in kilograms, height in meters, and the appropriate constant (default 1.20). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculation?
A: This provides a rough estimate. For precise measurements, consider methods like DEXA scans or skinfold calipers.

Q2: What's a typical constant (k) value?
A: The default 1.20 works for many adults, but this may vary by age, gender, and ethnicity.

Q3: When would I change the constant factor?
A: Adjust based on specific population formulas or if you have a more accurate constant for your demographic.

Q4: What are healthy body fat ranges?
A: Generally, 8-19% for men and 21-33% for women, but consult a healthcare professional for personalized advice.

Q5: Can I use pounds and inches?
A: This calculator uses metric units. Convert pounds to kg (÷2.205) and inches to m (×0.0254) first.