The inclination to monitor one’s weight largely has to do with its perceived relation to physical wellbeing; oftentimes, weight is seen as a visual basis for drawing conclusions about how one has been treating his or her body, and likewise, considered as an influence on how one perceives himself on a physical level. One common tool that people use in monitoring their weight is a BMI Calculator. This tool mainly uses two sets of values, namely, height and weight, to calculate BMI, which is a crude measure of how much fat resides in a person’s body.
The BMI test works by dividing height by weight, the resulting value of which is then interpreted based on the BMI Chart. The BMI Chart is essentially a Height Weight Chart, where Height and Weight values are represented on the Y and X axes, respectively, and where BMI for each Height/Weight combination is shown and classified under each of four categories, namely, Underweight, Normal, Overweight and Obese.
Due to its limited set of values, standard BMI calculation is sometimes seen as an inadequate measure of body fat. For instance, it can overestimate body fat composition in individuals who weigh a lot not because they are fat but because they are muscular. As such, there are other types of BMI calculators, many of them are available online, that compute BMI using other values such as age and waist size. In particular, the kind that considers waist size into the equation is referred to as a body fat calculator, since it is said to be a more accurate indicator of actual body fat composition. These kinds of online calculator provide results that are more indicative of how much body fat one has.
Finally, there is also a specially-developed BMI Calculator for women, which takes into consideration the difference between men and women’s normal and/or ideal weight. This came about in 1985, when the National Institutes of Health in the US discovered that the threshold BMI values for each BMI Chart category are slightly higher for men than for women. As a result, a specialized BMI Calculator was created for women to be able to interpret their BMI based on a set of values especially grouped for them.
Less than 20: Underweight
20 – 24.9: ‘Normal’ weight (Grade 0)
25 – 29.9: Overweight/’plump’ (Grade I)
30 – 40: Moderately obese (Grade II)
More than 40: Severely obese (Grade III)
These results generate rough guideline. BMI does not determine body composition or fat content. If in doubt – look in the mirror!