Ideal Weight Calculator

Ideal Weight Calculator
Ideal Weight (According To Lorentz) = KG

For calculating the ideal body-weight (w) of a subject;
for men: w = (height [cm]− 100) − ((height − 150)/4);
for women: w = (height − 100) − ((height − 150)/2);

Ideal Weight Calculator

The ideal weight calculator calculates the optimal height, gender, and age of the body (IBW) range. Many specialists have long been looking for the notion of finding the IBW using a formula. Several popular formulas are now in existence and our ideal weight calculator provides the results for side-by-side comparisons.

How many ought I to weigh?

Most of them tried to reduce weight at some point or at least knew somebody. This is largely related to the concept of an "ideal" body weight, which often builds on what is presented in different media like social media, TV, films, publications, etc. Although today's ideal body weight (IBW) is sometimes focused on perceived visual appeal, IBW was implemented to estimate doses for medical purposes, and the formulas it calculates are not at all related to how someone looks at a certain weight. Since then, the metabolism of certain medications has been discovered to be based more on IBW than on total body weight. Today, IBW is also frequently utilized in sports, as many activities categorize persons by their body weight.
Note that IBW does not measure perfectly. It does not take into account the proportions of body fat and muscle in the body of a person. This means that fit, healthy athletes can be classified as overweight based on their IBW. This is why IBW should be seen in the sense that it is an imperfect metric and not always indicating a person's health or weight; you can be well over or under your 'IBW' and be quite healthy.
The weight of a person is not a precise science. It depends heavily on each individual. There is no measure to date, be it a body mass index (BMI) or any other metric that can indicate the weight to be healthy for a person. They are merely references, and it is more important than chasing a specific weight based on a broad formulation to make healthy lives choices such as regular exercise, a variety of unprocessed meals, obtaining enough sleep, etc.
However, several factors may influence the optimal weight; the main factors are described below. Other determinants include conditions of health, fat distribution, progeny, etc.


Theoretically, age should not be a big factor of an IBW for girls from 14-15 years and for boys from 16-17, after which most people cease growing. Human men and women are anticipated to lose 1.5 and 2 centimetres in height by the age of 70 accordingly. It is crucial to bear in mind that as people age, slim muscle mass reduces and excess body fat is easy to build. This is a natural process, but the consequences of age can be reduced by adopting different behaviors such as dietary surveillance, exercise, stress, and sleep.


In general, women weigh less than men but, of course, they have a higher percentage of body fat. This is because the male physique is usually more muscular than fat. It is more muscular than fat. Not only that, but women have a poorer bone density in general. Males tend to be taller than females, last but not least.


The bigger the person, the more muscle mass and body fat it has, the more weight it gives. A man at a height similar to a woman should weigh roughly 10-20% heavier.

Size of the body frame

Body frame size is another aspect that can significantly affect optimal weight measurement. Typically the size of the body framework is classified as tiny, medium, or large boned. It is measured on the circumference of the handle of a person concerning its height.

Ideal Weight Finding Formulas

The IBW formulas were largely intended to assist the determination of the pharmacological dosage. All the formulas have the same size of a base weight at a height of 5 feet and have a fixed weight increase of 5 feet per inch. For instance, if you are a 5'10" male, you can add (2.3 ~ 10) kg in 50 kg to obtain 73 kg or ~161 lbs, whatever is your ideal weight using the Devine method.
The formulas differ in the values based on the study and findings of the scientists involved. The Devine formula is the most commonly used IBW measurement formula.

Formula G. J. Hamwi (1964)

Male: 48,0 kg + 2,7 kg + 5 feet per inch
Female: 5 feet and 45.5 kg + 2.2 kg every inch.
Invented for medical doses.

B. J. Fantastic Formula (1974)

Male: 50,0 kg + 2,3 kg + 5 feet per inch
Woman: 45.5 kg + 2.3 kilogramme + 5 metres per inch
It was originally designed as the basis for medical doses based on weight and height, similar to the Hamwi Formula. The formula has over time become a universal IBW determinant.

Formula J. D. Robinson (1983)

Male: 52 kg + 1,9 kg + 5 feet inch.
Female: 49 kg + 1.7 kg + 5 feet inch
Devine Formula Modification.

Formula D. R. Miller (1983)

Male: 56.1 kg + 1.41 kg + 5 feet per inch.
Women: 53.1 kg + 1.36 kg + 5 ft.
Devine Formula Modification.

A healthy range of BMI

The range recommended by the World Health Organization (WHO) is 18.5 - 25 for both men and women. Based on the BMI range, a healthy weight can be detected at any particular height.
BMI is a standard statistic used to determine IBW. It is extensively used as a rapid indicator of possible health concerns in the medical industry. In general, the higher the BMI, the more likely a person is to experience health issues including obesity, diabetes, heart disease, and many more. It is an indicator used by doctors to inform their patients about possible medical problems, particularly if their BMI is noticeably increased, and is currently the official measure to classify persons according to different levels of obesity.

Healthy children's BMI range

All following calculations apply to adults 18 years of age or older. For children and adolescents, refer to the BMI charts issued by Disease Control and Prevention Centers (CDC). The CDC recommends that children retain a BMI based on their age from the 5th to 85th percentile.

Ideal Weight Calculator Limitations

All formulas and procedures are restricted. Since the formulas are created for as many people as possible, they cannot be very precise for each individual. The formulas solely contribute to gender and height, and there are no physical disability concerns, people at extreme ends, levels of exercise, or muscle mass-to-body fat ratios, generally known as body composition. Our Optimum Weight Calculator is meant to be used as a general guideline based on popular formulas and its findings are not designed to be strict values to a person's ideal weight.