Body Fat Percentage Calculator
Estimate your body fat % using U.S. Navy, Skinfold (3-site / 7-site), or BMI-based methods.
Disclaimer: For informational purposes only. Always consult a qualified healthcare provider for medical, fitness, or nutrition advice.
📏 Body Fat Percentage Calculator – Multi-Method, Accurate, and Easy to Use
Knowing your body fat percentage is one of the best ways to track real progress toward your fitness goals. This free Body Fat Calculator uses multiple proven methods — U.S. Navy, Skinfold Caliper, and BMI-based — to give you accurate estimates, whether you have a tape measure, calipers, or just your basic stats.
🛠 Multiple Calculation Methods
- U.S. Navy Method – quick and reliable, based on height, neck, waist, and hip measurements.
- Skinfold Caliper Method – 3-site or 7-site Jackson–Pollock formulas for detailed tracking.
- BMI-Based Estimate – fast calculation using height, weight, age, and sex.
📋 Easy, Flexible Inputs
- Metric or Imperial units – switch instantly.
- Core fields: Sex, Age, Height, Weight.
- Auto-adjusting fields for each method (e.g., waist, neck, hips, or caliper sites).
- Built-in validation for realistic measurement ranges.
📊 Detailed Results at a Glance
- Body Fat % (rounded to 1 decimal place).
- Fat Mass and Lean Body Mass in kg or lb.
- Category classification (Essential, Athlete, Fitness, Average, Obese).
- Ideal body fat range for your sex and age group.
⚡ Designed for Accuracy and Speed
Modern, mobile-friendly interface with instant unit conversion, clear explanations, and Copy Results & Reset buttons. Whether you’re at the gym, at home, or with a coach, you can measure and compare using different methods in seconds.
This all-in-one tool makes it easier than ever to track fat loss, muscle gain, and body composition changes — giving you a clear picture beyond just the number on the scale.