Body Mass Index (BMI)

Body Mass Index

Guide To Body Mass Index

Body Mass Index Calculator – How to Determine Body Mass Index for Healthy Body Weight

Body Mass Index (BMI)

There is no such thing as an ideal body weight – at best, there is only a healthy weight range. To determine this healthy weight range, and whether you are a normal weight, overweight, or obese, doctors use a height-weight system called Body Mass Index. Body Mass Index is a measure which takes into account a person’s weight and height to gauge weight status in adults of either gender.

Body Mass Index Drawback

Body Mass Index does not consider lean body mass. It is possible for a healthy, muscular individual with low body fat to be classified as obese using the Body Mass Index formula.

Body Mass Index Formula

The Body Mass Index uses your body height and weight. It is calculated by dividing your weight in kilograms by the square of your height in meters. The BMI metric formula is:

  • Your Weight (in kilos) divided by Your Height (in Meters) squared, OR
  • Your Weight / (Your Height)2

Calculate Your Body Mass Index Now

To determine your Body Mass index and see whether you are inside the healthy weight range for your height, click: BODY MASS INDEX CALCULATOR

Body Mass Index Formula in Pounds and Inches

The pounds/inches BMI formula, is:

Your Weight (in pounds) x 704.5 divided by Your Height (in inches) x Your Height (in inches)

How to Determine Whether Your weight is Healthy

  • If your BMI is in the range 19 to 24.9 you have a healthy weight.
  • If your BMI is in the range 25 to 29.9 you are considered to be overweight and may incur moderate health risks. For example, heart disease, diabetes and high blood pressure are all linked to being overweight.
  • If your BMI is 30+ you are considered to be obese. Obesity is associated with increased risk of cancer, heart disease and other health problems. A BMI of 30 and over increases the risk of death from any cause by 50 to 150 percent, according to some estimates.
  • If your BMI is 35+ and you have a waist size of over 40 inches (men) and 35 inches (women) you are considered to be at especially high risk for health problems.
  • If your BMI is 40+ you are considered to be seriously obese and at a very serious risk of health problems.
  • Note: Above BMI 25, the higher the BMI, the greater the risk of developing additional health problems.

Body Mass Index and Weight Loss

According to health experts, people who are overweight but who have no other health risk factors (such as high cholesterol or high blood pressure) should focus on healthy eating and regular exercise to keep from gaining additional weight.

For people who are overweight and also have health risks, they recommend trying to actively lose weight. Consult your doctor or other health professional before beginning any exercise or weight-loss program.

Health Risks of Obesity

  • High blood pressure and stoke are twice as common in obese people.
  • Evidence is strong that obesity increases the risk of breast cancer (after menopause), womb cancer and kidney cancer.
  • Obesity may also increase the risk of colon cancer.
  • Gall bladder disease is three times as likely to occur in middle-aged obese women.
  • Diabetes is four times more common in middle-aged obese people than in middle-aged people of normal weight.
  • Coronary heart disease is twice as common in obese men under 45.
  • Osteoarthritis is more painful and less easily treatable if the person is obese.
  • Severe obesity may cause shortage of breath, varicose veins, backache and even psychological problems.
  • Remember, if your Body Mass Index is 30+, you are obese.

Body Mass Index Chart

Body Mass Index Information

Body Mass Index is the standard medical method of assessing healthy weight, overweight and obesity. It uses height and weight data. BMI is calculated by dividing your weight in kilograms by the square of your height in meters. The BMI formula (in pounds/inches) is:

Your Weight (in pounds) x 704.5 divided by Your Height (in inches) x Your Height (in inches)

Interpreting Your BMI

  • If your BMI is 19 to 24.9 you have a healthy weight.
  • If your BMI is 25 to 29.9 you are considered to be overweight and may incur moderate health risks.
  • If your BMI is 30+ you are considered to be obese. Obesity is linked to increased risk of cancer, heart disease and other health problems.

Or Use the Body Mass Index Chart (see Figure 1. below)

Find the intersection between your weight in pounds (top row) and height (left hand column). The number located at the intersection is your BMI number.

Figure 1. Body Mass Index Chart

Weight in pounds100105110115120125130135140145150155160165170175180185190195200205210215
Height
5’0″192021222324252627282930313233343536373839404142
5’1″181920212223242526272829303132333435363637383940
5’2″181920212222232425262728293031323333343536373839
5’3″171819202122232424252627282930313232333435363738
5’4″171818192021222324242526272829303131323334353637
5’5″161718192020212223242525262728293030313233343535
5’6″161717181920212122232425252627282929303132333434
5’7″151617181819202122222324252526272829293031323333
5’8″151616171819192021222223242525262728282930313232
5’9″141516171718192020212222232425252627282829303131
5’10”141515161718181920202122232324252526272828293030
5’11”141415161617181819202121222323242525262728282930
6’0″131414151617171819192021212223232425252627272829
6’1″131314151516171718191920212122232324252526272728
6’2″121314141516161718181919202121222323242525262727
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