Body Fat Calculator
Estimate body fat percentage using the U.S. Navy method
Your Measurements
Results
Enter measurements to calculate body fat
About this Tool
The Body Fat Calculator uses the U.S. Navy method to estimate body fat percentage based on circumference measurements. Unlike BMI, which only considers height and weight, this method accounts for body composition by measuring specific body parts. It's a practical way to assess fitness and health without expensive equipment.
Common Use Cases
Fitness Progress Tracking
Monitor body composition changes during weight loss or muscle building programs more accurately than scale weight alone.
Health Assessment
Evaluate health risks associated with body fat levels, as high body fat is linked to various health conditions.
Athletic Performance
Athletes can optimize performance by maintaining body fat within their sport's ideal range.
Goal Setting
Set realistic body composition goals and track progress toward them over time.
Pro Tips
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Measure Consistently
Take measurements at the same time of day, ideally in the morning before eating, for consistent tracking.
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Measure Accurately
Use a flexible measuring tape, keep it snug but not tight, and measure at the correct body locations (narrowest waist, fullest hip).
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Track Trends
Single measurements can vary. Track weekly or monthly trends rather than day-to-day fluctuations.
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Combine with Other Metrics
Use alongside photos, measurements, and how clothes fit for a complete picture of progress.