How to calculate height to weight ratio

The content of the article

• How to find out if weight matches height
• How much should a person weigh
• Adults
• Children and teens
• What is BMI
• What affects BMI
• Age
• Floor
• Body type
• Muscle mass
• Height to weight ratio

Body mass index, the difference between the waist and hips, the percentage of fat in the body – the main ways to assess weight. Some formulas take into account the physique of a person. Health, level of physical strength are often not taken into account. There are many tables, formulas that vary so much that they are confusing. However, there are standard rules..

How to find out if weight matches height

The taller the person, the more bone tissue, muscle, fat in him, so he is heavier. For this reason, calculating the ideal weight, first of all, take into account the growth of a person. There are several ways you can learn about extra pounds by measuring your height..

The simplest formula for height and weight belongs to the Frenchman Paul Brock:

• For women. Height (cm) – 110. The normal weight of a girl whose height is 180 cm is 70 kg.
• For men. Height (cm) – 100. The ideal mass of a young man is 180 cm – 80 kg.

This option does not take into account age, physique. Because of this, it is not suitable for people with heavy bones, expressed muscles. Brock’s formula has been reworked and looks like this:

• For women: (height in cm – 110) multiply by 1.15. This means that at 180 cm the ideal weight is 80.5 kg.
• For men: (height in cm – 100) multiply by 1.15. At 180 cm, the standard weight is 92 kg.

How much should a person weigh

American doctors, determining the dosage of drugs, take the following calculation as a basis:

• Women: 49 kg + 1.7 kg per inch (2.54 cm) after 5 feet (152.4 cm). This means if a girl is 6 feet tall (182.88 cm), her ideal weight is calculated as follows: 49+ (1.7 * 12) = 69.4 kg.
• Men: 52 kg +1.9 kg per inch above 5 feet. Weight 6 feet = 74.8 kg.

Some researchers suggest calculating your ideal height and weight from tables or online calculators. To do this, measure the main indicators. For example, the maximum allowable weight displays a table of body weight and growth of Egorov-Levitsky. Higher numbers indicate obesity:

Adults

If you are not satisfied with the finished table of growth and weight, you can calculate the ideal parameters by determining such indicators:

1. BMI (Kettle body mass index) – shows the correspondence of height and weight to the norm.
2. Waist to height ratio. The first number is divided by the second. If the final figure is 0.5, the person has normal body weight.
3. Dividing the waist circumference by the circumference of the hips. Studies have shown that people who have a lot of fat at the waist are prone to cardiovascular disease, diabetes:

• In men: numbers below 0.9 – low risk; 0.9-0.99 – moderate; above 1 – high.
• Among women: up to 0.8 – low risk; 0.8-0.89 – moderate; from 0.9 – high.

Children and teens

Measuring adolescent weight is a different approach. Children are constantly evolving. In some, a jump in growth is observed at 7 years old, in others – at 11 years old, others grow slowly, fully stretching to 20 years. With the rapid development of muscle and mass do not have time to build up – the child looks thin.

With gradual growth, the teenager first gains weight, and only then grows, after which the proportions return to normal.

Table weight-height ratio in children and adolescents

When determining the rate of development of a child, doctors use a special table. Deviations to the smaller side indicate thinness. If the difference is more than 10 units, you need to consult a specialist. Indicators above the norm mean that the body either grows rapidly, or the child weighs more than necessary:

What is BMI

Body mass index helps determine the tendency to be overweight. The indicator does not reflect how the fat was distributed in the body or its amount, since the calculation does not take into account the total body composition.

A sick person may be with a normal BMI, and a healthy person with an increased BMI, because of which he falls into the category of “obesity”. It often happens with athletes.

The BMI formula is more suitable for average height (men – 168-188 cm, women 154-174 cm). Lower people must subtract 10% in order to get their weight, and add as much tall. In addition, this formula can “cheat” when measuring athletes.

However, BMI is relatively accurate in assessing obesity or underweight. The calculation formula is simple:

BMI = weight (kg) / height (m2)

The interpretation is as follows:

What affects BMI

It should be borne in mind that with the same index, people can look different, depending on the characteristics of growth, physique, and the amount of muscle mass. Gender and age also play a role..

Age

Over time, the body slows down metabolic processes, fats do not burn as fast as in youth. Because of this, the mass can deviate from the ideal by a couple of kilograms. This is normal, but WHO standards do not take this into account..

However, when calculating your body mass index, remember how old you are.

Recommendations are as follows:

Floor

When calculating BMI, gender is not taken into account, although a comparison shows that boys have a higher coefficient. According to WHO recommendations, a man and a woman 180 cm tall normally have the same indicators. If their weight is 90 kg, the BMI for both is 27.77. This is a tendency to obesity. We must go on a diet and do physical education.

Body type

The ratio of weight and height depends on the figure. There are three types:

• Asthenic. It is characteristic for fragile people. Men and women have thin bones, a small mass of muscles, narrow shoulders, long arms and legs. Asthenics have a high metabolic rate, they are very active, not prone to obesity. Weight is often below normal..
• Normosthenic. People of this type are distinguished by large bones, broad shoulders, and muscles are developed. Normostenics have a good metabolism, they quickly gain fat and muscle mass, they are easily dumped. They are characterized by normal weight indicators. Obesity is rare.
• Hypersthenic. People of this type tend to gain weight. They have small stature, soft, rounded shapes, poorly developed muscles. It’s hard for them to get rid of extra pounds.

When calculating the ideal weight, taking into account the physique, another index developed by Quetelet is used.

To get it, you need to divide the weight in grams by the height in centimeters. This is a more accurate way, since it takes into account the years and type of figure:

Muscle mass

Muscles are heavier than fat, so people with the same weight but different physical fitness have different body quality. Moreover, in both cases, BMI is increased.

To calculate the ideal weight, you need to find out the percentage of excess adipose tissue.

There are several ways to do this:

• Caliper. This is a tool with which skin folds are measured on the biceps, triceps, shoulder blade and waist. After that, the received numbers are summarized and calculated according to a special table.
• Body composition analyzers or online calculators. To do this, set the parameters specified in the instructions.

If there are no special devices, the formula will help. To apply it, you need to measure the circumference of the hips, extract the root from your height (most easily using a calculator). The formula looks like this: hips (cm) / root of growth (m) – 18.

In practice, the calculation is as follows:

1. Hip circumference 102 cm, height – 1.64 cm.
2. 1.64 x 1.28 (this is the root that is extracted from 1.64) = 2.09.
3. 102 / 2.09 = 48.
4. 48-18 = 30.

Decoding:

Height to weight ratio

Deviations of the mass in a smaller direction indicates a deficit, in a larger one – about obesity. Both conditions are dangerous and can cause irreversible changes..

With excessive thinness, internal organs become vulnerable: adipose tissue protects them from external influences.

The body also extracts energy from it, so when there is a lack of fat, activity decreases.

Other problems caused by mass shortage:

• Violation of thermogenesis – the ability to maintain body temperature. Constant weakness and chilliness appear.
• Decreased immunity. Too thin people often get sick.
• Fertility problems.
• Deteriorating skin condition, early appearance of wrinkles.
• Anorexia is a lack of appetite when the body needs food. Protein-energy deficiency develops. It causes irreversible changes, the result of which is death..

Excess fat is no less dangerous. Extra pounds primarily affect the work of the heart and blood vessels. The risk of such pathologies increases:

• diabetes mellitus;
• coronary heart disease;
• high blood pressure;
• myocardial infarction or brain stroke.

Attention! The information presented in the article is for guidance only. Materials of the article do not call for self-treatment. Only a qualified doctor can make a diagnosis and give treatment recommendations based on the individual characteristics of a particular patient.