Calculate your body fat percentage using the U.S. Navy Method based on body measurements.
Our Body Fat Percentage Calculator helps you estimate the percentage of your body that consists of fat tissue. Unlike body weight or BMI alone, body fat percentage gives a clearer picture of your body composition, helping you understand how much of your weight comes from fat versus lean mass such as muscle, bone, and organs.
This tool is ideal for tracking fitness progress, setting realistic goals, and improving overall health.
Body fat percentage is the proportion of your total body weight that is made up of fat. It includes:
Essential fat – necessary for normal bodily functions
Storage fat – fat stored in adipose tissue
Knowing your body fat percentage provides more meaningful insight into health and fitness than scale weight alone.
Using the calculator is simple and fast:
Select your gender
Enter your age
Enter required measurements such as:
Height
Weight
Waist circumference
Neck circumference
Hip circumference (for women, if applicable)
Click Calculate Body Fat Percentage
You’ll instantly receive an estimated body fat percentage along with an easy-to-understand category.
This method estimates body fat percentage using body circumference measurements and height. It is widely used due to its practicality and relatively high accuracy for adults.
In some cases, body fat percentage can also be estimated from BMI, age, and gender. While slightly less precise, it still provides useful insight when measurement data is limited.
Essential Fat: 2–5%
Athletic: 6–13%
Fitness: 14–17%
Average: 18–24%
High / Obese: 25% and above
Essential Fat: 10–13%
Athletic: 14–20%
Fitness: 21–24%
Average: 25–31%
High / Obese: 32% and above
Healthy ranges can vary based on age, lifestyle, and individual health factors.
Understanding your body fat percentage can help you:
Identify hidden health risks
Track fat loss more accurately than weight alone
Preserve muscle while losing fat
Improve athletic performance
Reduce risk of heart disease and metabolic disorders
Set realistic fitness and nutrition goals
BMI measures weight relative to height
Body Fat Percentage measures actual fat mass relative to total body weight
BMI does not distinguish between fat and muscle, while body fat percentage provides a clearer picture of body composition.
Several factors affect body fat levels, including:
Age
Gender
Genetics
Hormones
Diet and calorie intake
Physical activity level
Muscle mass
Because of these variables, body fat percentage should be viewed as a guideline, not a diagnosis.
This tool is suitable for:
Adults tracking fitness or fat-loss progress
Gym-goers and athletes
Personal trainers and coaches
Individuals managing weight
Health-conscious users seeking better insight than BMI
⚠️ Note: Results are estimates and should not replace professional medical evaluation.
Maintain a balanced, calorie-controlled diet
Prioritize strength training to preserve muscle
Include regular cardiovascular exercise
Eat enough protein
Get quality sleep
Manage stress levels
Healthy ranges generally fall between 10–20% for men and 18–30% for women, depending on age and fitness level.
Yes. Body fat percentage provides a more detailed understanding of body composition than BMI alone.
It provides an estimate based on proven formulas. Accuracy depends on correct measurements and individual body composition.
Yes. Fat loss and muscle gain can occur simultaneously, resulting in little or no change in body weight.
Every 4–8 weeks is ideal for tracking changes over time.
Yes, though athletes with high muscle mass may benefit from professional body composition testing for greater accuracy.
Use our Body Fat Percentage Calculator to gain deeper insight into your body composition and take smarter steps toward better health and fitness. It’s fast, free, and easy to use.