What's My Body Fat Percentage Calculator

Body Fat Percentage Formula (Male):

\[ Body Fat \% = 86.010 \times \log_{10}(abdomen - neck) - 70.041 \times \log_{10}(height) + 36.76 \]

Body Fat Percentage:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Body Fat Percentage?

Body fat percentage is the total mass of fat divided by total body mass, expressed as a percentage. It provides a more accurate assessment of body composition than body weight alone and is an important indicator of health and fitness.

2. How Does the Calculator Work?

The calculator uses the body fat percentage formula for males:

\[ Body Fat \% = 86.010 \times \log_{10}(abdomen - neck) - 70.041 \times \log_{10}(height) + 36.76 \]

Where:

\( abdomen \) — Abdomen circumference in inches
\( neck \) — Neck circumference in inches
\( height \) — Height in inches

Explanation: This formula uses logarithmic transformations of body measurements to estimate body fat percentage based on established anthropometric relationships.

3. Importance of Body Fat Measurement

Details: Monitoring body fat percentage is crucial for assessing health risks, tracking fitness progress, and maintaining optimal body composition. High body fat percentages are associated with increased risk of various health conditions.

4. Using the Calculator

Tips: Enter accurate measurements in inches. Measure abdomen at the level of the navel and neck just below the larynx. All values must be valid positive numbers, with abdomen measurement greater than neck measurement.

5. Frequently Asked Questions (FAQ)

Q1: Is this formula accurate for everyone?
A: This formula is specifically designed for adult males. Different formulas exist for females and other demographic groups.

Q2: What are healthy body fat percentage ranges?
A: For adult males: Essential fat 2-5%, Athletes 6-13%, Fitness 14-17%, Average 18-24%, Obese 25%+.

Q3: How often should I measure my body fat?
A: Monthly measurements are sufficient for tracking trends. Daily fluctuations are normal due to hydration and other factors.

Q4: Are there limitations to this calculation method?
A: This method provides an estimate. For precise measurements, consider DEXA scans, hydrostatic weighing, or BodPod testing.

Q5: Can I use this calculator if I'm female?
A: No, this formula is specifically for males. Females require a different formula that accounts for hip measurements and different coefficients.