How to Calculate Your Body Mass Index (BMI)
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Posted by From wiki.ehow.com on January 04, 2006 at 08:16:38:
The Body Mass Index (BMI) is a measurement tool that compares your height to your weight and gives you an indication of whether you are overweight, underweight or at a healthy weight for your height.
 Steps: 1. Collect a few simple household tools to calculate your Body Mass Index (BMI): your bathroom scale; a yardstick; a pencil and paper and calculator.
2. Weigh yourself on your bathroom scale. (The following formula is calculated in pounds.)
3. Measure your height in inches using the yardstick.
4. Use the pencil, paper and calculator to perform the following BMI calculation.
5. Multiply your weight in pounds by 703. Write down the result.
6. Take your height in inches and square the number (i.e. multiply the number of inches by the same number of inches).
7. Divide the first answer (your weight times 703) by the second figure (your height in inches squared). The answer is your Body Mass Index.
8. Judge your personal BMI result against the following scale: A BMI of less than 20 indicates you are thin for your height. A BMI between 20 and 25 indicates you are at a healthy weight. A BMI between 25 and 30 suggests you are overweight for your height. A BMI over 30 indicates obesity.
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