How the Calculator Works
This body fat calculator uses the scientifically backed U.S. Navy formula. It takes into account:
- Your gender
- Height (in centimeters)
- Waist and neck circumference
- Hip measurement (for females only)
The result is an estimate of your body fat percentage — an important metric for tracking physical fitness and progress. According to the Centers for Disease Control and Prevention (CDC), assessing body fat percentage is a more accurate measure of health than BMI alone.
Body Fat Calculator
Ideal Body Fat Percentage Ranges
Healthy body fat ranges vary by age and gender, but here are some general guidelines:
Men:
- Athletes: 6–13%
- Fit: 14–17%
- Average: 18–24%
- Obese: 25% and above
Women:
- Athletes: 16–23%
- Fit: 21–24%
- Average: 25–31%
- Obese: 32% and above
Body Fat Percentage Calculator – Fast & Accurate
Looking to calculate your body fat percentage quickly and accurately? Use our free Body Fat Percentage Calculator based on the U.S. Navy Method. The body fat calculator on this page is based on the U.S. Navy method, a widely accepted formula validated through scientific research. This reliable tool uses measurements of your neck, waist, and height — and hips for women — to estimate how much of your body is fat versus lean mass.
Why Body Fat Percentage Matters
Unlike BMI (Body Mass Index), which doesn’t account for muscle mass, your body fat percentage gives a clearer picture of your health and fitness. Whether you’re trying to lose weight, gain muscle, or just stay in shape, knowing your body fat can help guide your diet, workouts, and overall wellness strategy.
Who Should Use This Tool?
Our fat percentage calculator is ideal for:
- Fitness enthusiasts tracking fat loss or muscle gain
- Personal trainers and coaches assessing client health
- Anyone wanting a better understanding of their body composition
According to the National Institutes of Health, excess body fat can increase the risk of heart disease, diabetes, and other chronic conditions.
Tips for Best Results
- Use a soft measuring tape
- Measure first thing in the morning before eating
- Don’t flex while measuring
If you want to track your results over time, consider bookmarking this page and checking in weekly to see how your body composition evolves.