 BMI Calculator
 What Is It?
 Ideal BMI

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Body mass index (BMI) is a measurement of body fat based on height and weight. The formula for calculating BMI is given in Table 1 or you can use the body mass index calculator below.
Maintaining a healthy weight offers the following health benefits:
 Reduced risk of heart disease and certain cancers
 Better sleep quality
 Fewer muscle and joint pains
 Reduced risk of high blood pressure and diabetes
 Better regulation of bodily fluids
 Reduced burden on the heart and circulatory system
 High energy and ability to complete the desired activities
 Reduced cholesterol levels
 Reduced risk of gallbladder disease
Measurement Units  Formula and Calculation 

Kilograms and meters (or centimeters) 
Formula: weight (kg) / height (m)^{2} The formula for BMI is weight in kilograms divided by height in meters squared. If height has been measured in centimeters, divide by 100 to convert this to meters. 
Pounds and inches 
Formula: 703 x weight (lbs) / height (in)^{2} When using English measurements, pounds should be divided by inches squared. This should then be multiplied by 703 to convert from lbs/inches^{2} to kg/m^{2}. 
Example: If a person weighs 65 kg and the person’s height is 165 cm (1.65 m), the BMI is calculated as 65 ÷ (1.65)2 = 23.87 kg/m2, which means that the person has a BMI of 23.87 kg/m2 and is considered to have a healthy weight.
When calculating in pounds and inches, if a person weighs 120 lbs and the person’s height is 5 feet 6 inches (66 inches), the BMI is calculated as 703 x 120/(66)2 = 19.3 kg/m2, which means that the person has a BMI of 19.3 kg/m2 and is considered to have a healthy weight.
BMI Calculator
To use this calculator:
 The default BMI of 16.6 shown on the tool is for a 5'5" person who weighs 100 lbs.
 Use the switch on top to pick either metric or imperial measurements.
 Set the height and weight dials to match your own height and weight.
 View your BMI number at the center of the tool and see where you fall on the obesity chart.
BMI values are based on clinical data about averages for these measurements across a wide swath of people.
The body mass index (BMI) is used to assess your weight relative to your height. This BMI calculator allows you to easily screen yourself for obesity or extra, unhealthy weight. If your results from the calculator aren't in the healthy range, don't worry too much. People with muscular builds may be classified as obese, even with a low body fat percentage and optimum health, simply because the BMI formula uses only two data points.
What is the body mass index (BMI)?
Body mass index (BMI) is a person’s weight in kilograms divided by the square of height in meters. It indicates the amount of body fat.
BMI is the most inexpensive screening tool to measure body fat. Although it does not directly measure body fat, it can be correlated with a more direct measure of body fat.
The various categories of BMI include
 BMI values less than 18.5 kg/m2 are considered underweight
 BMI values between 18.5 kg/m2 to 24.9 kg/m2 are healthy
 BMI values between 25 kg/m2 to 30 kg/m2 are overweight
 BMI values greater than 40 kg/m2 are considered obese
What is the ideal BMI?
The ideal weight has been mentioned in Table 2.
Height  Minimal risk (BMI under 25 kg/m^{2}) 
Moderate risk 
High risk 

4'10''  118 or less  119–142  143 or more 
4'11''  123 or less  124–147  148 or more 
5'0''  127 or less  128–152  153 or more 
5'1''  131 or less  132–157  158 or more 
5'2''  135 or less  136–163  164 or more 
5'3''  140 or less  141–168  169 or more 
5'4''  144 or less  145–173  174 or more 
5'5''  149 or less  150–179  180 or more 
5'6''  154 or less  155–185  186 or more 
5'7''  158 or less  159–190  191 or more 
5'8''  163 or less  164–196  197 or more 
5'9''  168 or less  169–202  203 or more 
5'10''  173 or less  174–208  209 or more 
5'11''  178 or less  179–214  215 or more 
6'0''  183 or less  184–220  221 or more 
6'1''  188 or less  189–226  227 or more 
6'2''  193 or less  194–232  233 or more 
6'3''  199 or less  200–239  240 or more 
6'4''  204 or less  205–245  246 or more 
SLIDESHOW
See SlideshowAmerican Heart Association
CDC
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