The online body fat percentage calculator uses BMI or parameters such as weight, waist circumference, and height to estimate body fat percentage, and provides a classification reference for body fat percentage.
What is Body Fat Percentage ( BFP ) ?
The body fat percentage (BFP) of a human or other living being is the total mass of fat divided by total body mass, multiplied by 100; body fat includes essential body fat and storage body fat. Essential body fat is necessary to maintain life and reproductive functions. The percentage of essential body fat for women is greater than that for men, due to the demands of childbearing and other hormonal functions. Storage body fat consists of fat accumulation in adipose tissue, part of which protects internal organs in the chest and abdomen. A number of methods are available for determining body fat percentage, such as measurement with calipers or through the use of bioelectrical impedance analysis.
How to Calculate BFP?
There are various methods for calculating body fat percentage, such as underwater weighing method, human average density measurement method, ultrasound method, and so on. In general, in order to easily estimate the body fat percentage, BMI estimation can be used, or parameters such as neck circumference, waist circumference, and hip circumference can be used as a reference for the body fat percentage.
1. Calculate body fat percentage using BMI :
adult males : BFP = 1.20 × BMI + 0.23 × Age - 16.2
adult females : BFP = 1.20 × BMI + 0.23 × Age - 5.4
boys : BFP = 1.51 × BMI - 0.70 × Age - 2.2
girls : BFP = 1.51 × BMI - 0.70 × Age + 1.4
Note : Adults are 18 years or older.
2. Calculate body fat percentage using parameters such as waist circumference :
males : BFP = [ 495 / ( 1.0324 - 0.19077×log10(Waist-Neck) + 0.15456×log10(Height) ) ] - 450
females : BFP = [ 495 / ( 1.29579 - 0.35004×log10(Waist+Hip-Neck) + 0.22100×log10(Height) ) ] - 450
How much body percentage is good?
The American Council on Exercise Body Fat Categorization
|Essential Fat||10% - 13%||2% - 5%|
|Athletes||14% - 20%||6% - 13%|
|Fitness||21% - 24%||14% - 17%|
|Average||25% - 31%||18% - 24%|
Ideal Body Fat Percentages