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# BMI Calculator

• metric units
• other units
 Age ages: 2 – 120 Gender Male   Female
Height
Weight pounds
 Height centimeter Weight kilogram

## Result

BMI = 23 kg/m2 ( Normal ) 161718.525303540UnderweightNormalOverweightObesityBMI = 23

• Healthy BMI range: 18.5 kg/m2 – 25 kg/m2
• Healthy weight for the height: 128.9 lbs – 174.2 lbs
• Ponderal Index: 12.9 kg/m3

The Body Mass Index ( BMI ) Calculator can be used to calculate BMI value and corresponding weight status while taking age into consideration. Use the “ Metric Units ” pill for the International System of Units or the “ other Units ” tab to convert units into either US or metric units. note that the calculator besides computes the Ponderal Index in summation to BMI, both of which are discussed below in detail .

### BMI introduction

BMI is a measurement of a person ‘s leanness or corpulence based on their stature and burden, and is intended to quantify tissue mass. It is wide used as a general index of whether a person has a healthy consistency burden for their stature. specifically, the measure obtained from the calculation of BMI is used to categorize whether a person is scraggy, normal weight, fleshy, or corpulent depending on what range the rate falls between. These ranges of BMI vary based on factors such as area and age, and are sometimes further divided into subcategories such as sternly scraggy or very badly corpulent. Being fleshy or scraggy can have significant health effects, indeed while BMI is an fallible measure of healthy body weight unit, it is a utilitarian indicator of whether any extra testing or action is required. Refer to the table below to see the different categories based on BMI that are used by the calculator .

This is the World Health Organization ‘s ( WHO ) recommended body weight based on BMI values for adults. It is used for both men and women, old age 18 or older .

 Category BMI range – kg/m2 Severe Thinness < 16 Moderate Thinness 16 – 17 Mild Thinness 17 – 18.5 Normal 18.5 – 25 Overweight 25 – 30 Obese Class I 30 – 35 Obese Class II 35 – 40 Obese Class III > 40

This is a graph of BMI categories based on the World Health Organization datum. The crash lines represent subdivisions within a major classification .

### BMI table for children and teens, age 2-20

The Centers for Disease Control and Prevention ( CDC ) recommends BMI classification for children and teens between historic period 2 and 20 .

 Category Percentile Range Underweight <5% Healthy weight 5% – 85% At risk of overweight 85% – 95% Overweight >95%

### BMI chart for children and teens, age 2-20

The Centers for Disease Control and Prevention ( CDC ) BMI-for-age percentiles growth charts .
Chart for boys
Chart for girls

### Risks associated with being overweight

Being fleshy increases the risk of a number of good diseases and health conditions. Below is a list of said risks, according to the Centers for Disease Control and Prevention ( CDC ) :

• High blood pressure
• Higher levels of LDL cholesterol, which is widely considered “bad cholesterol,” lower levels of HDL cholesterol, considered to be good cholesterol in moderation, and high levels of triglycerides
• Type II diabetes
• Coronary heart disease
• Stroke
• Osteoarthritis, a type of joint disease caused by breakdown of joint cartilage
• Sleep apnea and breathing problems
• Certain cancers (endometrial, breast, colon, kidney, gallbladder, liver)
• Low quality of life
• Mental illnesses such as clinical depression, anxiety, and others
• Body pains and difficulty with certain physical functions
• Generally, an increased risk of mortality compared to those with a healthy BMI

As can be seen from the list above, there are numerous negative, in some cases fatal, outcomes that may result from being overweight. Generally, a person should try to maintain a BMI below 25 kg/m2, but ideally should consult their doctor of the church to determine whether or not they need to make any changes to their life style in ordering to be healthier .

### Risks associated with being underweight

Being scraggy has its own consort risks, listed below :

• Malnutrition, vitamin deficiencies, anemia (lowered ability to carry blood vessels)
• Osteoporosis, a disease that causes bone weakness, increasing the risk of breaking a bone
• A decrease in immune function
• Growth and development issues, particularly in children and teenagers
• Possible reproductive issues for women due to hormonal imbalances that can disrupt the menstrual cycle. Underweight women also have a higher chance of miscarriage in the first trimester
• Potential complications as a result of surgery
• Generally, an increased risk of mortality compared to those with a healthy BMI

In some cases, being scraggy can be a sign of some underlie condition or disease such as anorexia nervosa, which has its own risks. Consult your doctor if you think you or person you know is scraggy, peculiarly if the reason for being scraggy does not seem obvious .

### Limitations of BMI

Although BMI is a widely used and utilitarian indicator of healthy body weight, it does have its limitations. BMI is only an calculate that can not take body composition into account. Due to a broad variety show of body types a well as distribution of muscle, bone mass, and fatness, BMI should be considered along with other measurements preferably than being used as the lone method acting for determining a person ‘s healthy body burden .
BMI can not be fully accurate because it is a measure of excess body weight, rather than excess body fat. BMI is promote influenced by factors such as age, sex, ethnicity, muscle mass, and body fat, and bodily process grade, among others. For case, an older person who is considered a healthy weight, but is wholly nonoperational in their day by day biography may have significant amounts of excess body fatness even though they are not heavy. This would be considered unhealthy, while a younger person with higher muscle composition of the same BMI would be considered healthy. In athletes, particularly bodybuilders who would be considered corpulence due to muscle being heavier than fat, it is wholly possible that they are actually at a healthy weight for their body constitution. generally, according to the CDC :

• Older adults tend to have more body fat than younger adults with the same BMI.
• Women tend to have more body fat than men for an equivalent BMI.
• Muscular individuals and highly trained athletes may have higher BMIs due to large muscle mass.

The same factors that limit the efficacy of BMI for adults can besides apply to children and adolescents. additionally, stature and degree of sexual maturation can influence BMI and body adipose tissue among children. BMI is a better indicator of surfeit body fatness for corpulent children than it is for corpulence children, whose BMI could be a consequence of increase levels of either fat or nonfat aggregate ( all body components except for fatness, which includes water, organs, muscle, and so forth ). In slender children, the difference in BMI can besides be due to nonfat mass .
That being said, BMI is fairly indicative of body fat for 90-95 % of the population, and can efficaciously be used along with other measures to help determine an individual ‘s healthy body weight .

### BMI formula

Below are the equations used for calculating BMI in the International System of Units ( SI ) and the US customary system ( USC ) using a 5’10 ”, 160-pound person as an example :

USC Units:

BMI = 703 ×
 mass (lbs) height2 (in)
= 703 ×
 160 702
= 22.96
 kg m2

SI, Metric Units:

BMI =
 mass (kg) height2 (m)
=
 72.57 1.782
=  22.90
 kg m2

### Ponderal Index

The Ponderal Index ( PI ) is similar to BMI in that it measures the leanness or corpulence of a person based on their height and slant. The main dispute between the PI and BMI is the cubing rather than squaring of the acme in the formula ( provided below ). While BMI can be a useful tool when considering large populations, it is not reliable for determining leanness or corpulence in individuals. Although the PI suffers from like considerations, the PI is more reliable for use with very grandiloquent or short individuals, while BMI tends to record uncharacteristically high or broken soundbox fat levels for those on the extreme ends of the altitude and weight spectrum. Below is the equality for computing the PI of an individual using USC, again using a 5’10 ”, 160-pound individual as an case :

USC Units:

PI =
 height (in) ∛ batch ( pound )
=
 70 ∛ 160
= 12.89
 in ∛ pound

SI, Metric Units:

PI =
 mass (kg) height3 (m)
=
 72.57 1.783
= 12.87
 kg m3
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