Home Fitness Training What Is Ideal Body Weight and How to Calculate It 

What Is Ideal Body Weight and How to Calculate It 

9 min read

Ideal body weight, additionally known as lean body weight, is a household of indexes which have been used for nearly 150 years. It is utilized in emergency settings, and its use has been strengthened in the course of the COVID-19 pandemic. 

Read on to study ideally suited body weight and how to calculate it swiftly and simply utilizing the AFPA Ideal Body Weight Calculator. 


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What Is Ideal Body Weight?

The time period “ideal body weight” was carried over from the original IBW formula developed by French surgeon Dr. Pierre Paul Broca in 1871. He developed it as a low-cost and oblique methodology of assessing body composition for troopers within the French military. 

Since then, there have been variations and updates of formulation for ideally suited body weight, together with these developed by Robinson, Devine, Hamwi, Miller, and Hammond. Most of those variations are referred to as lean body weight formulation or by utilizing the identify of the developer, reasonably than the time period “ideal body weight,” which may be deceptive. 

How Is Ideal Body Weight Used

Ideal body weight formulation are usually utilized in medical settings as a approach of calculating drug dosing, renal substitute dosing, and nutrition prescriptions. During the COVID-19 pandemic, emergency care specialists reinforced the use of ideally suited body weight reasonably than precise body weight as a safer, extra correct approach of calculating treatment dosages. 

Some health specialists carry over using ideally suited body weight formulation into consultations as a approach of offering a normal weight loss or weight achieve objective. 

Most health specialists for whom weight is essential of their teaching or remedy processes selected to use the body mass index as a substitute of the best body weight as a result of it offers a spread of weight thought-about regular or healthy, reasonably than a selected quantity. 

Body composition could also be essential to contemplate for health causes; having healthy muscle mass, for instance, is correlated with steadiness and perform. Additionally, a healthy composition of fats is correlated with coronary heart and metabolic health. 

Keep in thoughts that body mass index and ideally suited body weight are oblique strategies of measuring body composition. Thus, if body composition is essential, different, extra precise strategies can be utilized; these embrace skinfolds, bioelectrical impedance evaluation, dual-energy x-ray absorptiometry (DEXA), and magnetic resonance imaging. However, for most individuals, these strategies of measuring body composition are troublesome to entry or out of attain. 

Some people and clinicians select to use ideally suited body weight calculations to assist individuals perceive how their present weight compares to linearly calculated weight primarily based on their height and intercourse. 

It is essential to notice, nonetheless, that ideally suited body weight just isn’t a measure of health. If health is a priority for a person, then it is vital that they work with their main doctor to look at lab exams and total wellness. 

How to Calculate Ideal Body Weight

There are a number of equations for calculating ideally suited body weight. The “gold standard” for calculating ideally suited body weight is the one which was developed by Dr. BJ Devine in 1974. It was meant to calculate the dosage of sure medicines and continues to be used for this function. However, using the “Devine formula” has prolonged to offering an indicator of ideally suited body weight primarily based on height and intercourse. This formulation is as follows: 

Men: Ideal Body Weight (in kilograms) = 50 + 2.3 * (height in inches over 5 ft)

Women: Ideal Body Weight (in kilograms) = 45.5 + 2.3 * (height in inches over 5 ft)

Let’s take an instance of a girl who’s 170 cm tall (5’7”). 

If we plug it into the formulation, we get the next: 

Ideal body weight = 45.5 + (2.3 x 7) = 61.6 kg or 135.8 lbs. 

OR, Use the Easy Way

AFPA has developed a device to allow you to calculate ideally suited body weight primarily based on a person’s intercourse and height. If ideally suited body weight is helpful for you to know, skip the calculator, save a while, and click on right here: https://www.afpafitness.com/tools-and-resources

Main Takeaways

Ideal body weight, or lean body weight, is utilized in scientific settings to calculate secure drug dosages. Some health professionals select to use it in scientific or workplace settings to present sufferers and shoppers with weight achieve and weight loss targets primarily based on their height. If you need to calculate your ideally suited body weight or assist a consumer to calculate theirs, it can save you the simplified ideally suited body weight formulation, or you should use the AFPA Ideal Body Weight Calculator. 


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  1. https://www.sciencedirect.com/science/article/abs/pii/S1525861010001489 
  2. https://wellcomecollection.org/works/ptx87ejb 

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