Body Mass Index Formula

  -Body Mass Index Formula …what the heck is that? 
My best friend Amy seemed to think it would be a good idea to find out what our bmi's were.

She didn't realize that I didn't even know what a bmi formula was, let alone what it meant. (skip ahead to BMI Chart.) -Allow me to explain....

Amy's kind of a health nut.

-She's always coming up with some little tidbit about what we should do to achieve our healthiest weight, and what a women's ideal weight really should be.

Like I said, Amy is my best friend, and when it comes to a persons ideal weight, the fact that she could probably be a model tends to make me listen to her all the more.

That, and the fact of the matter is, my family's never been all that healthy to begin with.

-Alzheimer's, Breast cancer, Diabetes, they've all been in my family. Maintaining that ideal weight is the least of our problems.

-Not so, according to Amy …it's probably the cause of at least some, if not all of my family's health problems. (see obesity dangers)

Jen never heard of the body mass index formula.
That's where the Body Mass Index Formula Chart comes in.

The Body Mass Index Definition:           -It's the relationship between your height and weight that's associated with body fat and your health risk.

The index value is then used to assess overweight and underweight. (See Body mass index chart and formula below)

-Though it does not measure the actual percentage of your body fat, the body mass index chart, (or Bmi formula, Bmi chart), can be an extremely useful tool, and a helpful addition to any weight loss system. 

-Bmi estimates a persons body fat, based on their height and weight.

-The Body Mass Index Formula does not distinguish between body fat and muscle or bone mass, so this must be taken into consideration when calculating bmi values for the elderly, or for an athlete.

-An athletes muscle mass will make their bmi formula reading much higher, because muscle is heavier than fat. A professional football players number on a Bmi Chart would be way up there.

-But most of us who do have a higher reading with the Bmi formula (unfortunately), also know that it's not the result of excess muscle mass, and reducing it (by losing weight) is a real good idea.

-Conversely, the lost muscle and bone mass of many elderly people can put their Bmi Formula reading in a lower range. They could in fact actually be overweight, but for an active healthy adult over the age of 65, the slight increase in body fat of a Bmi Chart reading of 25-27, may actually help to stave off osteoporosis.

-Weight gain and body mass have long been known to be risk factors for breast cancer, heart disease, diabetes and most other diseases as well.

-The body mass index formula chart can also help you estimate your ideal weight as well.

-We all need all the help we can get, and with the body mass index formula and the bmi chart, we have a starting point and something to strive for.





  The Body Mass Index Formula (Bmi formula) 

The body mass index formula is used to find a persons healthy weight. Your height and weight are calculated together, to estimate your body fat.

-To calculate your BMI:

1. - Multiply your weight in pounds, by 703.

2. - Divide that number, by your height in inches.

3. - Divide the result, by your height in inches again.

-Example: Using the Bmi formula let's determine the body mass index for "Jennifer," a woman 5 foot-4" (64 inches) tall, who weighs 150 pounds:

1. -(Jen's weight) 150 x 703 = 105,450

2. - 105,450 divided by (Jen's height) 64 inches = 1647.65

3. - 1647.65 divided by 64 again = 25.74 (Jen's body mass index formula number.)


  Your Body Mass Index reading should be under 25

-A bmi formula number under 17.5 usually indicates Anorexia or a related eating disorder.

-For an average size healthy person, using the body mass index formula you should obtain a reading of between 18.5 and 24.9. Around the 24 bmi mark would be a healthy weight, but anything under the 25 mark is good.

-A person with a bmi formula number over 25 but under 30, is overweight.

-A bmi formula reading of more than 30 indicates obesity.

-Over 40 bmi indicates morbid obesity.


See Frankie's story concerning the risks of obesity.




-Jen is actually only 6 pounds above her 25 Bmi Formula limit, and would be at her ideal weight between around 109 - 144 lbs, depending on her size and build.

-If Jen were a small framed gal, 109 - 119 pounds would be about right, if she had a medium frame, 119 - 135 pounds, and if she were a larger woman, a range of 135 - 144 pounds would be fine. (I hope this is her, with a bmi formula reading of 25.6, she won't need to lose very much)

-Unfortunately, most women have their own ingrained beliefs of what a woman's ideal weight should be. More often than not, that weight is far below what their actual "healthy weight" should be, and not even a realistic goal.

-Men, on the other hand, tend to think their ideal weight as heavier than medically recommended. (Good excuse for eating more, I guess)




-Another indicator of body fat is waist size. (regardless of bmi formula result) A waist size over 40" for a man and 35" for a woman, indicates excessive body fat.

-High Blood Pressure and High Cholesterol can also be indicators for a high level of body fat. (and a correspondingly high bmi formula reading)




How do you know what your ideal weight should be?

 For most people, if you considered your ideal weight to be what you weighed at 24, it's a good bet, that weight would be your best weight for the rest of your life. If you can stay within 10 lbs. of that weight, you'd be doing great.

Wouldn't that be nice?

-Another simple, yet very reliable method of figuring your ideal weight is this easy formula:

-For Men: Add 108 pounds for the first 5 feet of your height, and then add pounds for each additional inch. (Deduct 6 lbs. for each inch under 5 feet) -Men do tend to run heavier than women, due to more muscle and bone mass.

-For a six-foot man: 108lbs. (first 5 feet) + 72lbs. (12" over 5', 12 times 6 pounds = 72) = 180 pounds, give or take depending on your build.

-For Women: Add 106 pounds for the first 5 feet of your height, then add 6pounds for each added inch. (Deduct 6lbs. for each inch under 5 ft)

-Not really the bmi formula type? Try the body mass index chart below:


Body Mass Index Chart


-To Find Your Bmi: Find your height in the left hand column, follow across to your current weight, then go down to your Bmi# on the bottom.

Height Weight (lbs.)
4' 10" 91 96 100 105 110 115 119 124 129 134 138 143
4' 11" 94 99 104 109 114 119 124 128 133 138 143 148
5' 0" 97 102 107 112 118 123 128 133 138 143 148 153
5' 1" 100 106 111 116 122 127 132 137 143 148 153 158
5' 2" 104 109 115 120 126 131 136 142 147 153 158 164
5' 3" 107 113 118 124 130 135 141 146 152 158 163 169
5' 4" 110 116 122 128 134 140 145 151 157 163 169 174
5' 5" 114 120 126 132 138 144 150 156 162 168 174 180
5' 6" 118 124 130 136 142 148 155 161 167 173 179 186
5' 7" 121 127 134 140 146 153 159 166 172 178 185 191
5' 8" 125 131 138 144 151 158 164 171 177 184 190 197
5' 9" 128 135 142 149 155 162 169 176 182 189 196 203
5' 10" 132 139 146 153 160 167 174 181 188 195 202 207
5' 11" 136 143 150 157 165 172 179 186 193 200 208 215
6' 0" 140 147 154 162 169 177 184 191 199 206 213 221
6' 1" 144 151 159 166 174 182 189 197 204 212 219 227
6' 2" 148 155 163 171 179 186 194 202 210 218 225 233
6' 3" 152 160 168 176 184 192 200 208 216 224 232 240
6' 4" 156 164 172 180 189 197 205 213 221 230 238 246
BMI# 19 20 21 22 23 24 25 26 27 28 29 30

-Top of page Balanced Diet Chart - My Healthy eating Plans -

-To Estimate Your Ideal Weight: 

Start at the bottom of the Bmi Chart above, at a Bmi of 25, go up until you find your height row. Any weight below this number would be a healthy weight. (Bmi# 24 would be great!)

-You can go left at your row, as your body size decreases. Sorry, only elderly folks and athletes can go right at their height row.

-Remember, men do tend to carry a higher body weight and Bmi# because of higher muscle mass, and bone mass. (and both, weigh more)


To Extended Bmi chart (for adult obesity) 

-After learning your ideal weight from the bmi chart above, your next move should be to do something about it!

Check out our 15 minute Chart for burning calories.

-We certainly hope that some of the methods described here helped you to discover your ideal and healthiest weight.

Perhaps they even inspired you to try to attain it.


... Your health is certainly worth the effort!


Take a look at this BMI calculator for children and teens from the CDC.


-To lengthen your life, shorten your meals. 
~Proverb

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-More Healthy Links....

Fat Grams Vs Calories - Low Fat Ideas - Chart for Calories Burned - Reducing Belly Fat

10 Healthiest Foods - Chart for a Balanced Diet - Flat Abs - Running to Lose

Breast Cancer and a Healthy Weight - Importance of a Balanced Diet

Health Benefits of Water - Positive Self Talk

Balanced Diet Chart for Kids - Calorie Content of Foods

Calculating Your Basal Metabolism Rate


From BMI Formula -back to Home Page


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