Body Fat Percent Calculator for Women

Body Fat Formula for Women:

\[ \text{Body Fat %} = 495 / (1.29579 - 0.35004 \times \log_{10}(\text{waist} + \text{hip} - \text{neck}) + 0.22100 \times \log_{10}(\text{height})) - 450 \]

Waist Circumference:

inches

Hip Circumference:

inches

Neck Circumference:

inches

Height:

inches

Body Fat Percentage:

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1. What is a Body Fat Percentage Calculator for Women?

Definition: This calculator estimates body fat percentage using the US Navy method based on body circumference measurements.

Purpose: It helps women track fitness progress and health metrics more accurately than BMI alone.

2. How Does the Calculator Work?

The calculator uses the US Navy body fat formula for women:

\[ \text{Body Fat %} = 495 / (1.29579 - 0.35004 \times \log_{10}(\text{waist} + \text{hip} - \text{neck}) + 0.22100 \times \log_{10}(\text{height})) - 450 \]

Where all measurements are in inches.

3. Importance of Body Fat Percentage

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

4. Using the Calculator

Tips: Measure circumference at:

Waist: Narrowest part (typically at navel level)
Hip: Widest part around buttocks
Neck: Below the larynx with tape sloping downward

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this method?
A: The Navy method is about 3-4% accurate compared to professional methods like DEXA scans.

Q2: What's a healthy body fat percentage for women?
A: Essential fat: 10-13%, Athletes: 14-20%, Fitness: 21-24%, Average: 25-31%, Obese: 32%+

Q3: Why different formulas for women and men?
A: Women naturally carry more body fat, especially in hips/thighs, requiring different calculations.

Q4: How often should I measure?
A: Every 4-8 weeks to track progress, as daily fluctuations are normal.

Q5: Should I measure fasted?
A: For consistency, measure in the morning before eating or drinking.