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BAI & BMI Calculator

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Body Adiposity Index & Body Mass Index comparison calculator to calculate the fat percentage and body mass in human body.

 

Formula

BAI = ( HC / (HM )1.5) – 18
  • BAI = Body Adiposity Index
  • HC = Hip Circumference in Centimeter
  • BMI = Body Mass Index
  • WK = Weight in Kilogram
  • HM = Height in Meter

What is The Body Adiposity Index (BAI)?

The Body Adiposity Index (BAI) is a measure of body fat distribution that is used to estimate the percent of body fat. The BAI is calculated by dividing the waist circumference by the hip circumference. The resulting number is then multiplied by 100.

The BAI has been found to be a reliable predictor of body fat percentage in both men and women. However, the BAI is not a perfect measure of body fat distribution. For example, the BAI does not account for body size or muscle mass. Additionally, the BAI may overestimate body fat in people who are overweight or obese.

Despite its limitations, the BAI can be a useful tool for estimating body fat percentage. The BAI is easy to calculate and does not require special equipment. Additionally, the BAI can be used to track changes in body fat over time.

What is The Body Mass Index (BMI)

The Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to both men and women between the ages of 18 and 65 years.

BMI can be used to indicate whether you are overweight, obese, underweight or normal weight. A high BMI can be an indicator of high body fatness. BMI can also be used as a screening tool to identify potential health risks such as heart disease, diabetes and cancer.

A BMI of 25.0 or more is overweight, while the healthy range is 18.5-24.9. A BMI of 30.0 or higher is obese. For most people, BMI provides a reliable indication of body fatness. However, BMI is not an accurate measure of body fat for athletes and people who have a muscular build.
What is a good Body Adiposity Index?

The BAI healthy ranges by sex and age are as follows:

For men:

BAI <= 21 years old: 15 to 20

BAI > 21 years old: 10 to 15

For women:

BAI <= 21 years old: 20 to 25

BAI > 21 years old: 15 to 20

What is a good Body Mass Index?

Everyone’s ideal body mass index (BMI) will be different based on their individual height, weight, and body composition. However, general guidelines suggest that a healthy BMI for men falls between 18 and 25, while a healthy BMI for women falls between 18 and 21. Anything outside of these ranges is considered to be either underweight or overweight. Maintaining a healthy BMI is important for overall health and wellness, and can help reduce the risk of developing obesity-related conditions such as heart disease, diabetes, and certain cancers.

How is the Body Adiposity Index calculated?

The Body Adiposity Index (BAI) is a measure of body fatness that is calculated by dividing the waist circumference by the hip circumference. The BAI provides a good estimate of body fatness for both men and women. A high BAI indicates a higher risk for developing obesity-related health problems.

How is the Body Mass Index calculated?

The body mass index (BMI) is calculated by taking your weight in kilograms and dividing it by your height in meters squared. For example, a person who weighs 154.324 (Pound) lbs [70 kg] and is 68.9 Inches [1.75 m] tall would have a BMI of 22.9.

BMI = Weight (kg) / Height2 (m2)

Underweight = < 18.5

Normal weight = 18.5 to 24.9

Overweight = 25 to 29.9

Obesity = BMI of 30 or greater

BAI classification

Female Body Adiposity Index (BAI) Classification

Age range BAI minimum BAI maximum Status
20 - 39 0% 21% Underweight
20 - 39 21% 33% Healthy
20 - 39 33% 39% Overweight
20 - 39 Over 39% Over 39% Obese
40 - 59 0% 23% Underweight
40 - 59 23% 35% Healthy
40 - 59   41% Overweight
40 - 59 Over 41% Over 41% Obese
60 - 79 0% 25% Underweight
60 - 79 25% 38% Healthy
60 - 79 38% 43% Overweight
60 - 79 Over 43% Over 43% Obese

Male Body Adiposity Index (BAI) Classification

Age range BAI minimum BAI maximum Status
20 - 39 0% 8% Underweight
20 - 39 8% 21% Healthy
20 - 39 21% 26% Overweight
20 - 39 Over 26% Over 26% Obese
40 - 59 0% 11% Underweight
40 - 59 11% 23% Healthy
40 - 59   29% Overweight
40 - 59 Over 29% Over 29% Obese
60 - 79 0% 13% Underweight
60 - 79 13% 25% Healthy
60 - 79 25% 31% Overweight
60 - 79 Over 31% Over 31% Obese

BMI ranges

BAI minimum BAI maximum Status
0 15 Very severely underweight
15 16 Severely underweight
16 18.5 Underweight
Over 18.5 Over 25 Normal (healthy weight)
25 30 Overweight
30 35 Obese Class I (Moderately obese)
  40 Obese Class II (Severely obese)
Over 40   Obese Class III (Very severely obese)

Example of a BAI & BMI calculation

Let’s figure out the two figures for a male aged between 20 - 39 years having a total weight of 270 lbs, a height of 6 feet and 4 inches and a hip circumference of 35 inches:

  • His Body Adiposity Index (BAI) percentage is 15.15%. Considering this BAI percentage, the gender and the age range his body is Healthy.
  • His Body Mass Index (BMI) is 32.87kg/m2. Based on the BMI ranges his body is considered to be Obese Class I (Moderately obese).

References

  1. BMI Classification. (2006) Global Database on Body Mass Index. World Health Organization.
  2. Gadzik J. (2006) How much should I weigh? -- Quetelet's equation, upper weight limits, and BMI prime. Conn Med; 70(2):81-8.

Importend Notes and Disclaimer

 

Caveats and Recommendations: This calculator is NOT intended to diagnose illness or be used as a substitute for medical advice or treatment. Some models provide predictive outcomes which may not be accurate. Please consult a medical professional for any medical treatment or diagnosis advice.

 

Note: This calculator is presented for your own personal use and is to be used as a guide only. Medical and other decisions should NOT be based on the results of this calculator. Although this calculator has been tested, we cannot guarantee the accuracy of its calculations or results.

 

Disclaimer: This calculator is provided without warranty and CANNOT be used to diagnose or treat any disease or condition.

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