This body fat calculator is a tool designed to help you estimate what percentage of your total body weight is body fat. If you have ever wondered what your body fat percentage is, this is a perfect place to find out.
More than 98% of the human body is composed of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Potassium, sulfur, sodium, chlorine, and magnesium are responsible for almost another 1%. These are the 11 most important, so-called non-trace, elements.
Regarding the molecules, the most common molecule in the human body is, of course, water, which takes about 65% of mass, followed by proteins and lipids. Other molecules that have a decent percent of mass are hydroxyapatite, carbohydrates, and nucleic acids.
What Is Body Fat?
Body fat, also referred to as adipose tissue, is a source of stored energy for the body that’s composed of fat cells, nerve cells, immune cells, and connective tissue. Fat cells can grow in both size and number over your lifetime.
Generally, the number of fat cells in your body is determined after birth and throughout your adolescent years. Assuming your weight remains stable throughout adulthood, your total number of fat cells stabilizes as well.
Weight gain can lead to the growth of new fat cells, but weight loss only changes the size of fat cells, not the total number.
Your total body fat is an important health metric to monitor, as too much body fat can raise your risk of certain chronic illnesses that may ultimately lead to premature death, including heart attack, stroke, type 2 diabetes, and some types of cancer.
The good news is that many of these conditions are preventable by maintaining a healthy body fat percentage.
How a Body Fat Calculator Works?
Body fat calculators estimate the percentage of your body weight composed of fat. They achieve this by employing specific formulas that consider various physical measurements.
These calculators typically require information such as:
- Gender: Body fat distribution differs between men and women.
- Weight: This is a fundamental component of any body composition calculation.
- Height: Used in conjunction with weight to determine basic body metrics.
- Additional measurements: Some calculators may also request measurements like neck, waist, hip circumference, or age for more accurate estimations.
The calculator then applies a mathematical equation to these inputs to derive an estimated body fat percentage. The formula is designed to correlate the provided measurements with typical body fat distribution patterns.
Note: Body fat calculators provide estimates, not exact measurements. Factors like hydration levels, muscle mass, and individual body composition variations can influence the results. While they offer a general idea of body fat, for more precise assessments, consult a healthcare professional.
Is my body fat percentage normal?
Once you have calculated your body fat percentage, you should compare it with the recommended values. The list below comes from the American Council on Exercise and shows the average percentages in specified groups.
- Essential fat: 10%-13% (women), 2%-5% (men)
- Athletes: 14%-20% (women), 6%-13% (men)
- Fitness: 21%-24% (women), 14%-17% (men)
- Average: 25%-31% (women), 18%-24% (men)
- Obese: 32%+ (women), 25%+ (men)
This data means that if your body fat percentage is lower than 31% for women and 24% for men, you are in the average range, and you have nothing to worry about. Higher levels of body fat may be dangerous for you.
The chart below shows the average body fat percentages of Americans from samples between 1999 and 2004. It is taken from the National Health and Nutrition Examination Survey in the United States.
Why Use a Body Fat Calculator?
Health Monitoring:
Body fat percentage provides a more accurate assessment of your health than BMI alone. While BMI categorizes individuals based on weight and height, it doesn’t distinguish between fat and muscle. A person with high muscle mass may have a high BMI but a low body fat percentage.
Conversely, someone with a low BMI may still have a high body fat percentage. By understanding your body fat, you get a more precise gauge of your fitness.
Track Your Progress:
If you’re working on losing fat or gaining muscle, tracking your body fat percentage over time can help you assess your progress more accurately than the scale. You can observe whether the changes in your body composition reflect fat loss or lean muscle gain.
Fitness Goals:
Knowing your body fat percentage allows you to set realistic and healthier goals. For example, athletes or fitness enthusiasts often aim for lower body fat percentages, while individuals looking to maintain good health might target a healthy range within the standard BMI range.
Weight Management:
The body fat percentage is especially useful for those looking to manage weight effectively. It can give a clearer picture of whether you’re losing fat or simply losing lean muscle mass, which can help adjust diet and exercise plans accordingly.
How to Calculate Body Fat?
There are multiple ways to calculate body fat percentage, with some proving more accurate than others.
- Dual-energy X-ray absorptiometry (DEXA) scans can provide you with detailed information about your body composition, including body fat. The scans use a low amount of radiation and typically help health care providers evaluate bone density. If you’d like to get a scan for the purpose of calculating your body fat, find a DEXA scanning location at www.dexascan.com.
- Hydrostatic weighing measures body fat percentage by evaluating how much water is displaced when you’re underwater. With proper facilities available, this method is pretty simple, but it does require you to remain underwater for the length of a full exhalation —at least three times so the technician can average your results for a more accurate assessment. Hydrostatic weighing isn’t well-suited for people who are ill, frail, or highly anxious. Hydrostatic weighing is less preferred to the DEXA scan, with its precise results and less cumbersome testing procedures.
- Bod pods use air displacement plethysmography (ADP) to determine your body fat percentage and total “fat-free” mass. You sit in the pod while an oscillating diaphragm causes changes in volume in the chamber, and the pod measures the pressure response to these changes (which reflect the presence of your body). The difference in volume between the empty pod and the pod with you inside indicates your body’s volume. The test takes about 10 minutes and is appropriate for most people, including older adults, children, and people who have obesity. Bod pods are most easily found at some universities.
- Calipers can be used to gather skinfold measurements, also known as pinch tests, from the biceps, triceps, under the shoulder blades, and above the hip bones. Body fat percentage can be predicted based on those results with the help of a measurement conversion chart. Calipers are a budget-friendly way to measure body fat percentage, but results are most accurate when measurements are collected by a professional. A personal trainer may be a good resource for a skinfold assessment.
- Computed tomography (CT) and magnetic resonance imaging (MRI) scans can be used to calculate body fat as well, but they tend to be expensive and aren’t covered by health insurance for this purpose. CT scans also risk exposing the body to unnecessary radiation.
- Bioelectrical impedance analysis (BIA) scales can also measure body fat and are widely available, but they may not be as accurate as other methods. They only provide an estimate of body fat percentage, and readings can vary based on water weight and the specific BIA scale used.
How to Reduce Body Fat?
There are several science-backed ways to reduce excess body fat, including:
- Eating more “good” fats, such as heart-healthy monounsaturated and polyunsaturated fats found in avocados, fish, olive oil, nut butter, dark chocolate, and eggs.
- Increasing protein intake, which increases feelings of satiety.
- Replace high-calorie sodas, alcohol, and other sweetened beverages with water.
- Eating more high-fiber foods, such as cruciferous vegetables like broccoli and cauliflower.
- Completing both aerobic and resistance training workouts each week.
- Getting an adequate amount of sleep each night.
Is Body Fat Important?
The human body needs a healthy amount of body fat to function properly. Body fat secretes hormones, helps regulate insulin signaling after eating, regulates body temperature, and plays a role in immune function, reproduction, and nutrient absorption. What’s more, body fat assists in the absorption of essential fat-soluble vitamins A, D, E, and K.
Meanwhile, excess body fat carries a higher risk of developing type 2 diabetes, heart disease, and certain types of cancer, and too little body fat can lead to osteoporosis, reduced immune function, and decreased muscle strength.
How accurate are body fat calculators?
A body fat calculator isn’t the most accurate measurement of body fat percentage, but it can be one of the more accessible methods for most people to use.
Expect to receive a broad estimate of your body fat percentage from a body fat calculator. If you have questions about your body fat percentage or want a more accurate assessment, contact your healthcare provider.