Body Fat Percentage Calculator

About Body Fat Percentage Calculator

The Free Body Fat Percentage Calculator uses the US Navy Method to estimate your body fat percentage based on your gender and body measurements. Understanding your body fat percentage can help you assess your overall fitness, set health goals, and track progress over time.

Features:

• Calculates Body Fat Percentage using the US Navy Method.
• Provides fitness category (Essential, Athletes, Fitness, Average, Obese).
• Supports Metric (cm) and Imperial (ft/in) units.
• Clear, user-friendly interface.

How to Use:

• Select your units (Metric or Imperial).
• Enter your age, gender, and measurements as requested.
• Click "Calculate My Body Fat %" to see your results.

US Navy Method:

For Men: BF% = 86.010 * log10(waist - neck) - 70.041 * log10(height) + 36.76

For Women: BF% = 163.205 * log10(waist + hip - neck) - 97.684 * log10(height) - 78.387

Body Fat Categories (ACSM):

Men: Essential: 2-5%, Athletes: 6-13%, Fitness:14-17%, Average:18-24%, Obese:25%+

Women: Essential:10-13%, Athletes:14-20%, Fitness:21-24%, Average:25-31%, Obese:32%+

Body Fat Percentage and Age:

While age is not directly used in the calculation, it can influence the interpretation of your body fat percentage. Generally, as individuals age, they may experience changes in body composition. For example:

• Men (20-39): A healthy range might be around 8-19%.
• Men (40-59): A healthy range might be around 11-21%.
• Men (60+): A healthy range might be around 13-24%.

• Women (20-39): A healthy range might be around 21-32%.
• Women (40-59): A healthy range might be around 23-33%.
• Women (60+): A healthy range might be around 24-35%.

These are general references and may vary depending on individual factors, including overall health, genetics, and lifestyle. Always consider consulting a healthcare professional for personalized advice.

Additional Resources:

• Body Fat Percentage - Wikipedia
• The Utility of Body Composition Assessment in Nutrition and Clinical Practice: An Overview of Current Methodology - NCBI

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