1. What is a Body Fat Percentage Calculator?

Definition: This calculator estimates your body fat percentage based on your BMI, age, and gender using a scientifically validated formula.

Purpose: It helps individuals assess their body composition, which is important for health, fitness, and weight management.

2. How Does the Calculator Work?

The calculator uses gender-specific formulas:

Where:

• BMI — Body Mass Index (weight in kg divided by height in meters squared)
• Age — Your current age in years
• Gender — Biological sex which affects fat distribution

Explanation: The formula accounts for the relationship between BMI, age, and typical body fat percentages for each gender.

3. Importance of Body Fat Percentage

Details: Body fat percentage is a better health indicator than weight alone. Healthy ranges vary by gender and age:

• Men: 8-19% (healthy), 20-25% (overweight), 25%+ (obese)
• Women: 21-33% (healthy), 33-39% (overweight), 39%+ (obese)

4. Using the Calculator

Tips:

• Select your gender
• Enter your BMI (calculate it first if you don't know)
• Enter your current age
• All values must be positive numbers

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculator?
A: It provides a reasonable estimate (±3-5%) but for precise measurement, consider DEXA scans or hydrostatic weighing.

Q2: Why does gender affect the calculation?
A: Women naturally carry more essential body fat than men (for reproductive functions).

Q3: Does this work for athletes?
A: It may underestimate body fat for very muscular individuals as BMI doesn't distinguish muscle from fat.

Q4: What if I don't know my BMI?
A: Use our BMI Calculator first: BMI = weight(kg) / (height(m) × height(m)).

Q5: How often should I check my body fat percentage?
A: Monthly measurements are sufficient to track meaningful changes.