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bmi

BMI Calculator

Gender

Height (ft)

Height(in)

Height (cm)

 

Weight

 

Gender

Age (2 - 20 years)

Height (ft)

Height(in)

Height(cm)

 

Weight

 

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Add BMI Calculator to your website through which the user of the website will get the ease of utilizing calculator directly. And, this gadget is 100% free and simple to use; additionally, you can add it on multiple online platforms.

Available on App

Download BMI Calculator App for Your Mobile, So you can calculate your values in your hand.

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A smart bmi calculator helps to calculate body mass index value and corresponding weight status. This calculator allows you to compute bmi for men, women, teen, and Childs. Use this calculator to know in which category your body mass index falls, it can be normal, underweight, overweight, or obese. You can enter your weight either in pounds (lbs) or kilograms (kg), and height in feet and inches or centimeters into this calculator for calculations.

Give a read to this post to understand bmi formula, chart, scale, range, classification for men and women (adult), and child and teen, and much more. 

BMI (Overview):

A body mass index is referred to as a measurement of leanness or corpulence that dervived from the mass (weight) and height of a person. Remember that this number does not measure body fat directly, however, it is moderately correlated with more direct measures of body fat. It is defined as body mass divided by the square of the body height, and is universally expressed in units of \(kg/m^2\), resulting from mass in kilograms and height in metres. BMI calculation is considered to determine whether a person is underweight, healthy weight, overweight or obese.

Remember that bmi ranges may vary depends on your exercise regime. The more you gain weight more will be the body mass index, but it doesn’t mean that you are obese it may be because of high muscle also.

What is BMI Formula?

Let’s look at the formula:

English BMI Formula:

For Pounds & Inches:

$$ BMI = Weight (lb) / (Height (in))² \times 703 $$

When you considering English measurements or the above bmi equation, pounds should be divided by inches squared. And then, this should be multiplied by 703 to convert from lbs/inches² kg/m².

Metric BMI Formula:

For Kilograms and Meters (or Centimeters):

$$ BMI = \frac {Weight (kg)}{Height (m)^2} = \frac {m}{h^2} $$

where;

\(m = mass (in kilograms)\)

\(h = height (in meters)\)

The above equation is demonstrated weight in \(kg\) divided by height in meters squared. If your height has measured in centimeters \((cm)\), then all you need to divide it by \(100\) to convert this to meters \((m)\).

Our calculator also uses the above formulas to evaluating body mass index.

How to Calculate BMI?

Look’s at the given examples for better understanding:

Calculate BMI With English Measurement:

Example:

What is my bmi, if:

  • My Weight is \(150 lbs\)
  • My Height is \(5’5” (65 inches)\)

Let’s put the value into the English formula:

\(BMI = 150 / (65)^2 \times 703 = 24.96\)

Calculate BMI With Metric Measurement:

Example:

Whats my bmi, if:

  • My Height is \(165 cm (1.65m)\)
  • My Weight is \(68 kg\)

Now, simply add the values into the metric formula:

\(BMI = \frac {68}{1.65^2} = 24.98\)

In general, once you determine your Body Mass Index measurement, you can easily find out if you’re at the health related risk. Our adult bmi calculator for male and female also uses the same formula to calculate body mass index for men and women.

Calculate BMI’s For Different Ages:

Our calculator categorized into the four main population groups: men and women (adult), kids and teenagers. This body mass index calculator works as:

  • BMI Calculator For Men: Want to know what normal bmi for men is. This calculator helps to calculate body mass index for men corresponding to weight status by taking the age & weight into consideration.
  • BMI Calculator For Women: Helps to calculate bmi for women and tells whether you have a healthy body mass index for women, or an obese.
  • BMI Calculator For Teenagers: To calculate bmi for teenagers that based on clinical growth charts, and tells whether teen’s body mass range falls into an underweight, healthy weight, overweight, or obese.
  • BMI Calculator For Kids (Children): Allow to calculate bmi for kids according to the age percentile that depends on the CDC growth charts for children. This tool generates CDC BMI chart for kids.

How is BMI Interpreted For Adults?

For adults 20 years old and older, Body Mass Index is interpreted by using standard weight status categories. Experts depicted that the bmi scale is something that will place you in one of six categories. These categories for BMI are the same for adult men and women of all body types and ages. Now, look at the given chart!

Classification Body Mass Index Score
Underweight less than 18.5
Normal Weight 18.5 – 24.9
Overweight 25 – 29.9
Obesity (Class 1) 30 – 34.9
Obesity (Class 2) 35 – 39.9
Extreme Obesity (Class 3) 40+

BMI less than 18.5 (Underweight):

A lean Body Mass Index can refer to as your weight maybe too low. Remember that the lower your body mass range the greater the health risks become!

BMI is between 18.5 and 24.9 (Normal Weight or Healthy Range):

Remember that individuals who have a BMI between 18.5 to 24.9 possess the ideal amount of body weight.

BMI is between 25 and 29.9 (Overweight):

Remember that such an overweight range increased the risk for a variety of illnesses. Recent studies found an increased rate of diabetes, blood pressure, and heart disease was recorded at 27.8 for men and 27.3 for women. So, try the above body mass index calculator for women and men to find the your normal range! Also, once you know you are overweight, consult to your health care provider!

BMI is between 30-34.99 (Obese Class 1):

People within this range are prone to a physically unhealthy condition. Ideally, to reach bmi healthy range, you ought to consult your health care provider and consider reducing your weight by 5% to 10%. This weight reduction is good to reach your ideal bmi for adult men and women.

BMI is between 35-39.99 (Obese Class 2):

If you fall within this range, then experts depict that the risk of weight-related health problems and even death, is severe. So, immediately consult your MEDICAL PRO for optimal weight range.

BMI is over 40 (Obese Class 3 : Morbid Obesity):

Studies depicted that if an individual have BMI of 40+, it indicates that he/she have an extremely high risk of weight-related disease and even premature death. So, consult to Doctor to get recommendations according to your body mass index ranges!

Remember That!

To lower your BMI, here you need to stick to slow weight loss process, means 1 to 2 pounds per week, it is said to be as the safest way to reduce excess flab. Studies found that rapid weight loss can cause you to reduce muscle rather than fat. Apart from it, your chances of developing other health related problems increases that include gallstones and nutrient deficiencies. You ought to make legitimate long-term changes in your eating and stick to physical activities to reach your weight loss goals!

It doesn’t matter whether you’re trying to reduce or maintain your weight; you should have to improve your eating habits.

You have to reduce fat intake, and avoid all the dairy products and soft (soda) drinks. Simply, stick to at least 30 minutes physical activity a day and eat healthy to reach healthy BMI range (normal weight).

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Risks of being (high BMI) Overweight & Physically Inactive:

If you’re overweight with a Body Mass Index over 25kg/m2 and physically inactive, you may develop:

  • Cardiovascular (disease of heart and blood circulation)
  • Gallbladder disease
  • High blood pressure (Hypertension)
  • Type 2 diabetes
  • Osteoarthritis
  • Types of cancer like a colon and breast cancer
  • Certain mental health disorders and depression

Risks of being underweight (low BMI):

If you’re underweight, you may be malnourished and develop:

  • Respiratory disease
  • Digestive disease
  • Digestive diseases
  • Cancer
  • Osteoporosis
  • Compromised immune function

BMI for Children And Teenagers:

Body Mass Index for children and teens is referred to as age-and sex-specific.  Remember that the calculation for children and teens results in BMI percentile.

Try bmi percentile calculator that tells in which percentile category your teens and children falls to CDC growth charts. Remember that the BMI ranges will remain the same for adults (women and men) throughout their life, but these figures are varying in children as kids are still at growing stage & do so at different rates.

Let’s take a look at this bmi graph to get a proper idea about percentiles:

bmi chart for kids

How do I calculate My bmi Using Calculator?

Want to know bmi for adult men and women, kids, and teenagers, all you need to plug-in the values into the body mass index calculator, it tells yin which weight category you fall in.

Calculate BMI For Adult (Men & Women):

Inputs:

  • First of all, you have to select the “Adult” men and women option from the tab
  • Very next, you have to select “Male” if you want to calculate body mass index for men, and select “Female”, if you want to do calculations for women
  • Then, you have to plug-in your height into the designated field of this calculator, it can either be in feet and inches (ft/in) or centimeters (cm)
  • Now, you have to put your weight into this tool, it can either be in pounds (lbs) or kilograms (kg)

Outputs:

Once you entered into the above fields, this adult bmi calculator for female and male will generates:

  • Your BMI
  • Classification of Weight Status by Body Mass Index
  • In which one of BMI Categories you fall in
  • Why BMI Matters
  • Healthy BMI Range
  • Ponderal Index
  • BMI Table & Chart

Body Mass Index is not only the factor that examine your overall health status, after getting the result, this calculator will allows you to measure waist to height ratio.

Calculate BMI for Kids & Teens:

Inputs:

  • First of all, you have to select the “Child & Teen” option from the field of this tool
  • Then, you have to select the “Boy” if you want to calculate BMI for child/teen boy, and select “Girl” if you want to do calculations for child/teen girl
  • Very next, you have to enter the “age” into the designated field
  • Now, you have to plug-in the value of “height” into the designated box of this tool, it can either be in ft/in or cm
  • Finally, you have to add you weight into the designated field of this calculator

Outputs:

Once you filled all the above fields, this calculator generates:

  • Your Child or Teen BMI
  • BMI-for-age percentile growth charts
  • In which one of BMI Percentile categories you fall in
  • Healthy Weight Range
  • BMI Percentile

BMI Charts:

Look at these charts for a better understanding of BMI scores. 

BMI Chart for Adults (Men & Women):

bmi chart men and women

BMI Chart for Kids & Teens (Boys):

bmi chart for kids and teens (boys)

BMI Chart for Kids & Teens (Girls):

bmi chart for kids and teens (girls)

What is a BMI percentile and how is it interpreted?

Once bmi is calculated corresponding to teens and child age, it is expressed as “Percentile”, it does not matter either it is obtained from bmi percentile graph or calculator for kids and teens. These percentiles are measure that is expressed a kid’s bmi relative to U.S children; they are participated in the national surveys from 1963-65 to 1988-94. Optimistic studies depict that height and weight change during the growth and development as they both are related to body fatness. Consequently, a child’s body mass index should be interpreted relative to the other children of the same age and gender.

Let’s take a look at the bmi-for-age percentile growth chart:

Weight Status Category Percentile Range
Underweight Less than the 5th percentile
Normal or Healthy Weight 5th percentile to less than the 85th percentile
Overweight 85th to less than the 95th percentile
Obese Equal to or greater than the 95th percentile

 

Possible Limitations of the BMI:

BMI is said to be a useful tool for determining healthful weight, but experts have depicted uncertainty about it’s reliability. Remember that when it comes to analyze body fat, BMI is not an accurate measure!

  • Body Mass Index measures overall nutritional status corresponding to relation of height and weight. However, no mention of body fat percentage or muscle mass
  • Also, BMI is not something that distinguish water weight, bone mass etc
  • BMI is not specific to sex of an individual. For instance, Body Mass Index of female and male is same whereas male contains more muscle mass & female has more fat mass which is not mention in BMI Chart.

FAQ’s:

What should my BMI be for my age?

You can take a look at above CDC bmi interpretation chart or use the above calculation to find the normal range. 

What is the best bmi for a woman?

The BMI measurements are varying in every woman, use the above calculator to know yours!

What is Ponderal Index?

The Ponderal Index Corpulence Index is said to be a measure of a leanness of an individual that is calculated as relationship between mass and height. In 1921, by Swiss physician Fritz Rohrer, it was the first proposed as the “Corpulence measure” and also known as Rohrer’s Index.

What is a good bmi for all ages?

The first thing is that there is no any specific figure of good bmi, everyone has different ranges! Simply, plug-in the values into the above calculator know your ideal or healthy range!

Should I worry about my BMI?

Optimistic studies reveal that having an unhealthy BMI is associated with the health problems linked with obesity. For better and optimal health goals, you should consult to doctor. 

How to maintain a healthy BMI?

Remember that maintaining a healthy BMI takes some work, stick to the following steps, it doesn’t matter whether you’re a starter or on the way:

  • You have to exercise at least 60 to 90 minutes most days of the week
  • Stay hydrated and consume a balanced diet
  • If your range is not where it should be, then you may have to reduce your caloric intake and also increase your exercise

When to Consult Medical Pro:

If your BMI score is outside of a healthy range, then it’s time to call a your health care provider. Also, you may need to consult to your dietician to achieve your health goals.

Disclaimer:

The calculator-online makes no claims of the accuracy of the published information and also the results that you get from the above calculator. The results of this tool are just estimations and intended for educational purposes only. The information and result from this tool are not intended to substitute for MEDICAL professional advice, diagnosis, or treatment.

References:

From Wikipedia, the free encyclopedia  – Body Mass Index Categories – Children (aged 2 to 20) – International variation – Relationship to health and Limitations

The source of ncbi recently updated – PMID: 16189499 DOI: 10.1038/sj.ijo.0803117 – Body mass index of healthy men compared with healthy women in the United States (US)

Legitimate information from the source of webmd – What Is a Healthy Weight – all you need to know about weight category

Get the ease with the livestrong – What Is a Normal BMI for Children -Charting and Comparing – Know the Disease Risks

 

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