How to Calculate BMI (Body Mass Index) and Everything You Should Know

Body Mass Index or BMI is a measurement of a person’s weight according to their height. It is more of an indicator rather than a measurement of a person’s total body fat. BMI correlates with your total body fat. Using BMI can determine if a person is underweight or overweight by calculating your body’s weight concerning your height. Want more to learn about Body Mass Index? If so, please keep reading below.

What is body mass index or BMI?

Body mass index, or BMI, is a calculation that uses height and weight to estimate how much body fat someone has. Body mass index (BMI) is a body fat measurement based on height and weight that applies to adult men and women.) It’s an indicator of an individual’s weight concerning their height. It offers an inexpensive and simple method of categorizing people according to their BMI value, so we can determine your weight category and indicate their potential risk for health conditions.

The Body mass index is a value derived from the weight and height of a person. The BMI is defined when the body mass is divided by the square of the body height. It is expressed universally in “kg/m2” that from mass in kg and height in m. The BMU may be determined using a table or chart that displays BMI as a function of mass and height with the use of contour lines or colors for different BMI categories and may use other measurement units. BMI is an indicator used for estimating the leanness or heaviness of an individual’s height and weight.

BMI is utilized for the evaluation of your weight. Despite that, there are restrictions to BMI because it can’t evaluate the person’s whole body composition,  but it’s an effective over-all indicator for ideal body weight based on the person’s height. This BMI value will then be used for categorizing individuals into different weight categories such as normal weight, overweight, underweight, or maybe obese in line to the range within individual BMI valued drops.

Body Mass Index really is about an indicator more rather than a measurement. This can help a person to assess his or her body weight concerning height. Anyone who wants to assess their BMI can use a BMI calculator for accurate calculations and results.

How to calculate Body Mass Index

You can calculate body mass index (BMI) using the following calculation: BMI = weight (in kg’s) divided by (height in meters) x height (in meters)) so for example, for someone who weighs 89kg and measures 1. 62m: BMI = 89 divided by (1. 62 x 1. 62) = 33. 9 kg/m2. The BMI can be used to quickly and assess if someone is likely to be a healthy weight. It uses a person’s weight and height.

Although BMI is a frequently used measure that is straightforward to calculate, it can only indicate whether someone is likely to be underweight, of normal weight, overweight or obese. BMI is perhaps best viewed as a helpful indicator guide to your appropriate weight.

Online BMI Calculators

Using an online body mass index calculator is another way individuals can determine if they are obese or something else by calculating their BMI or body mass index. People can likewise work out their body mass index by simply dividing the weight in kg by height in m. On the other hand, you can use an online BMI calculator as a substitute. For instance, muscular or athletic people may manifest a higher BMI, whereas the BMI scoring among the population in Asia is roughly lower by two points compared to the recommended standard levels.

Using an online BMI calculator can easily calculate your BMI value, and you can easily determine if you are healthy or not. One of the best advantages of an online BM calculator is its ease of use and accuracy. Everyone should be aware of the state of their health and body, and therefore, you should be mindful of the health risks derived from the potential problems you might have with your weight. If your BMI does not fit into the “normal” range, you might be inclined to a variety of severe health conditions. Being underweight can have serious consequences for your immune system or fertility and can also cause anemia.

Understanding Your BMI Result

BMI is considered an important measure for understanding your health based on your BMI value. Using a BMI calculator can produce an accurate calculation of your health status. The result from the BMI calculator can help you identify if your weight is appropriate for your height. Understanding the result of your body mass index helps an individual to determine if they are healthy or not. The result will give you a deeper understanding of your body structures.

Online BMI calculators can help you calculate your BMI. Furthermore, BMI results from online BMI calculators are more accurate than computing them manually. Based on the result, you can determine if you need to decrease or increase your food intake. BMI results can provide an accurate classification if you’re healthy or not.

BMI Table for Adults

The interpretation of BMI uses standard weight categories for adults over 20, similar to both men and women regardless of age. Once you have measured your BMI number, you can assess which weight status category you fall. BMI calculations used for adults are not a suitable measure of weight for children or adolescents. BMI calculations among children and adolescents are interpreted differently from an adult. Below is the BMI for adults:

For adults 20 years old and older, Adults’ BMI is interpreted by using standard weight status weight categories. These categories are the same for men and women of all body types and ages.

Adult BMI standard weight status categories are shown below:

Note: this is For adults 20 years and up.

BMI Weight Status
Below 18.5 (-) Underweight
25.0 to 29.9 (=) Normal weight
30.0 and Up (+) Obese

BMI Chart for Adults

BMI Chart for Adults

Image source: bmicalculatorusa.com

BMI is calculated the same, but the criteria for determining a normal weight are different. Instead of a specific BMI standard used, a BMI percentile is compared to other kids of the same gender and age. There are some slight differences to BMI checker among children and teenagers in comparison to BMI calculator in adults.

Body mass index has nothing to do with their sex or age in adults. No matter if you are male or female, similar BMI formula, as well as a BMI chart, apply to you. In teenagers and children, however, the child’s sex and age must be considered to calculate the body mass index. Body mass index refers to the measuring of how much of your body is made up of fat. In adults, if your BMI is above 25 but below 30, you are overweight, 30 or above, and you are obese.

BMI table among children and teens in the ages from 2 to 20

BMI is a measurement that estimates an individual weight with respect to height. This measurement is used in adults or children. BMI measurement can classify a person if he or she is underweight, normal weight, or overweight. These estimates can be used to determine if someone has a healthy or unhealthy weight. The centers for disease control and prevention have produced a calculator that delivers BMI as well as the equivalent BMI-for-age percentile using the CDC growth chart among teens and children.

First, click here for the calculator. Next, use the charts to see if a child’s weight is suitable for their age. The BMI-for-age percentile growth charts are commonly used to measure teens’ and children’s growth patterns and size in the United States. BMI-for-age weight status categories and the corresponding percentiles were based on a recommendation by the experts.

The table below is the BMI for the BMI-for-age percentile growth.

Weight Status Category Percentage Range
Underweight (-) Less than  5th %
Normal or Healthy Weight (=) 5th percentile to less than  85th %
Overweight (+) 85th to less than 95th %
Obese (++) Equal to or greater than 95th %

BMI chart among children and teens, age 2-20

BMI (body mass index) is a calculation that estimates how much body fat a person has based on their height and weight. BMI changes with age, so it’s crucial to check your BMI regularly. You can check the MBI growth charts based on your age in the online BMI calculator or CDC website.

Teens can have a high BMI if they have. It is actually typical for kids to have different body fat in their body amount at individual ages. Among children and teens, the appropriate range for BMI depends on the person’s age and gender. In the United States, the CDC has developed conventional charts that can be used for all gender with age brackets of 2 to 20  that displays the distribution of their body mass index standards.

Risks related with overweight

Sometimes the BMI chart isn’t an absolute indicator of an individual’s health. Today’s journal nutrition summarized some of the restrictions in interpreting health risks of being overweight utilizing only the readings from BMI. Besides, the BMI calculation and readings don’t have an accurate report for the excess fat location. Thus, it can’t tell whether a person has visceral fat on their body; visceral fats can increase the risk of getting a serious disease like a heart attack.

Being overweight will lead to dangerous illnesses and diseases. So it’s important to have a healthy lifestyle. This can help you lose weight much faster. BMI uses the height and weight to determine if one is at risk for chronic diseases such as high blood pressure, heart disease, and high cholesterol.

The higher your BMI number, the greater you’re in catching chronic diseases. To calculate your risk of weight-related diseases, put your height, weight, and waist circumference to an online BMI and health risks calculator. It’s best to weigh yourself in the morning without clothes. Compare your results to the following numbers, which will show you whether you are underweight, a normal weight, overweight, or, maybe, obese. Risk being associated with being overweight includes the following:

  • Prone to Fatty Liver Disease
  • Prone to High Blood Pressure
  • Prone to Heart Disease
  • Prone to Stroke
  • Prone to Diabetes
  • Prone to Various type of Cancer
  • Prone to Pregnancy Problems
  • Prone to Kidney Disease

One of the best advantages of a BMI test is that it is low-cost, reproducible, and easy to perform using an online calculator.  If your overweight or obese, it would be best to start losing weight immediately. Having a healthy and active lifestyle can make you healthier. Everyone should be aware of the state of their health and body, and therefore, you should be mindful of the health risks derived from the potential problems you might have with your weight.

Risks associated with being underweight

If an individual’s BMI is below 18.5, he or she is considered underweight. A person who is underweight in BMI calculation is prone to certain health risks. One must consult with a healthcare provider for more information about BMI calculations if you don’t know to use an online BMI calculator. Being underweight poses a threat to your overall health. Also, your chances of catching serious diseases are high.

Being underweight also increases your risk of declining health. You fall into the ‘underweight’ category if an individual has a BMI  of 18,5 and below. According to CDC, it is projected that 1. 4% of American adults as of 2014 are underweight. However, as this subject of obesity remains to be in need of thorough research, the margin of error still is on the high side of the study. If an individual has a BMI  of 18,5 and below, he or she is considered underweight. A person’s body is at risk of health decline. An underweight person has an increased chance of getting chronic diseases.

Your immune system can go down. The BMI helps to determine the health risks early and reduces the chance of developing much more serious problems on your health. It allows a person who is at risk of certain health problems to record their progress to progress an appropriate weight – for example, if a person will exercise daily and change their lifestyle, it can make them healthier and might produce an improvement in their weight. Risk being associated with being underweight includes the following:

  • Malnutrition
  • Decreased immune function
  • Infertility
  • Increased risk of surgical complications
  • Developmental delays
  • Osteoporosis

Is Body Mass Index reliable?

BMI is long since proven an effective measurement or indicator that can give accurate results. The result determines if your weight is healthy or not. We have been using BMI for almost 150 years now. Using BMI effectively determines one’s weight.  Body mass index (BMI) is a measure of body fat derived based on an adult man or woman’s height and weight. BMI is considered a key determinant of a person’s leanness or obesity.

Furthermore, BMI is a consistent and fast way to gauge a person’s health. It is a simple, cost-effective means of screening the categories of weight that may lead to medical problems shortly. The body mass index, or BMI, is a calculation used to determine your body fat level. It can help the attending physician determine your overall fitness and your risk of developing chronic diseases in some cases. Still, BMI is a reliable tool that can help you determine your overall health based on weight concerning your height.

Limitations of the BMI

Although a BMI score doesn’t reveal your total health structure, it’s a quick, easy and free way to get started on your path to a healthy lifestyle. Basically, your BMI should be used only as a screening tool. As we grow older, your BMI categories also change. BMI has significant limitations in evaluating an individual’s body weight as it does not take into account the distribution of body fat in the body.

It does not distinguish between fat, muscle, or bone density. It only calculates your total weight. BMI has flaws, but it does not mean that it has no use. Although BMI is not a perfect measurement, it’s a good indicator that can produce accurate weight results concerning your height. However, using BMI has limitations.

Who shouldn’t use a BMI calculator

Anyone has the right to use a BMI calculator. If you want to know your BMI, you can use online BMI calculates for accurate results. However, the result itself should not be your only basis to determine whether your unhealthy or healthy. If our BMI calculator finds that your BMI is outside of the healthy range, we recommend you talk to your doctor before making any changes to your diet or the amount of physical activity you do.

If the BMI calculator finds you are more than the ideal weight, losing just a few pounds is a great start. This can improve your health and help lower your risk of chronic diseases and other common diseases. If your BMI indicates you are less than the ideal weight, it would be best to increase your healthy food intake.