Body Fat Calculator

The Body Fat Calculator calculates the estimate body fat percentage in your body based on population average. Body fat includes essential body fat and storage body fat. The former is important to maintain life and the reproductive functions while the latter helps protect internal organs to a certain extent. 

Body fat calculation is one of the ways to measure your body composition. It is essential to know your body fat percentage and stay in a healthy range. If your body fat percentage is low, it means your resistance level to diseases is low. If your body fat percentage is high, you might have a higher risk of diabetes and other health related problems. It is therefore of paramount importance to measure your body fat percentage.

Quickly input the values in the body fat calculator below and check out your results!

Body Fat Calculator

How to Calculate

The calculation for body fat adopts the method used by the United Stated Navy Force. The standard error for the estimation is around 3.5%.

Four measurements are needed to determine your body fat percentage which are your height, neck, waist and hips measurements. Make sure you wear minimal clothing during the measurement and it is advised to have someone else taking your measurements for accuracy. Input the values to nearest half inch or within 1 cm would suffice. 

The formula used for men in this calculation is:

 100 x ((4.95 / (1.0324 – 0.19077 * log10(waist – neck) + 0.15456 * log10(height))) – 4.5).

The formula used for women in this calculation is:

100 x ((4.95 / (1.29579 – 0.35004 * log10(waist + hip – neck) + 0.22100 * log10(height))) – 4.5)

The result shows your body fat percentage based on population averages. It also reveals your body fat category using the American Council on Exercise Body Fat Categorization method as presented in the table below as well as the ideal body fat percentage of your age group. 

The American Council on Exercise Body Fat Categorization: 

body fat category

For more information about the calculation, you may visit GIGA Calculator. There also exist other more accurate and expensive methods for superior results. Always consult with your healthcare professional about your health status and before making any significant changes to your diet and lifestyle.


Getting to know your own body fat percentage as well as the ideal body fat among your age group are crucial information in helping you achieve your desired body fat percentage and weight.

There are various key factors you can work on to improve your body fat percentage. First and foremost is your calorie intake. When you consume more calories than you need, your body tends to stores the extra calories as body fat. The concept of “calorie-in, calorie-out” is important to maintain a stable weight which means the number of calories you eat should match the number of calories you expand, or else the excess calories in any form can be stored as body fat. Calorie Calculator is a tool that cam help you in calculating the optimal calorie intake you need per day to maintain weight, lose or gain weight. Hence, the first step is definitely adjusting your calorie intake to achieve your ideal body fat range. Be persistent, it will pay off eventually!

Another key aspect you can alter is you macronutrients intake. Macronutrients provide the body with energy for proper functioning. Carbs, fats and proteins are the three types of macronutrients. The Macronutrient Calculator can be of great value in helping you calculate your macro mix needed per day to achieve your weight goal. As such, you may try and act accordingly to achieve your desired body fat range.

Needless to say, exercise and water intake also significantly help with adjusting your body fat. Do exercise regularly and replace all sweetened beverages with water. Consume the recommended daily water intake to achieve weight goals as well. Check out the Water Intake Calculator to know your daily recommended water needs so as to boost your performance and aid weight management. Start taking actions today, be persistent and you will see great results soon.

Always remember “Your Health. Your Life. Your Priority.”

Don’t procrastinate. Don’t settle for less. Bend over backwards to achieve your health goals.