Thus it is important to take all this into account when trying to understand your BMI reading and also speak with a doctor or nutritionist before undergoing any new fitness routine or diet. In reality, the "normal" body weights for people vary from age, gender, and population.Having high muscle mass can result in a higher BMI because muscle is more dense than fat and thus for the same height someone with a lot of muscle can weigh as much as someone with high body fat.Even though taller people tend to be thinner on average, their larger bone mass usually skews their BMI to slightly larger values.The "normal" proportion is used for all heights and weights even though not everyone has the same body type.Several issues arise with this method and those are listed below: Basically the BMI assumes a "normal" body weight for men and women of average height and average fitness or activity level. Note that, in our BMI calculator, the 'Upper Weight Limit' depends on age and sex, so it is not fixed as in other calculators.It is important to note that the Body Mass Index is to be used as a general tool for determining a healthy body weight. Here is the BMI Prime formula: BMI' = Actual Weight/ Upper Weight Limit It is a simple modification of the familiar Body Mass Index (BMI) system.īMI Prime is defined as the ratio of a person’s Actual Weight (or Mass) to his Upper Weight (or Mass) Limit of the “healthy weight” range. What is BMI Prime?īMI Prime (abbreviated BMI’) is an index of total body fat content. If your height is 65 inches and you weigh 120 pounds, your BMI isįinally, BMI = 20.0 kg/m 2 (rounded). Here is the BMI formula in the English (Avoirdupois) system where weight is in pounds, and height is in inches: BMI = 703 x ( weight/ (height) 2) Furthermore, our BMI calculator is better than the standard BMI calculator once it includes both sex and age into its algorithm. On the other hand, someone with a light bone structure might be considered of normal weight, even if they have excess body fat.Īlthough some factors like, bone structure and muscle mass are not part of the equation when IMC is calculated, Body Mass Index can be helpful to set limits such as underweight, normal or obese, for individuals who lead a sedentary or "normal" life. You should avoid rapid weight loss, swings in weight, and improper dieting.īMI is solely based on weight and height, so it may be an imprecise indicator (might come out as overweight) of body fat if someone has a large bone structure, athletic build or a large muscle mass. The goal of weight loss should be to improve health. Some research studies have shown that a weight loss of 1 to 2 pounds per week for six months can improve the health of overweight people. This calculator computes appropriately your BMI by using a "redefined overweight and obese BMI thresholds for different gender and age groups", a 2015 study, for people who are more than 16 years old male or female. BMI is also known as Quetelet’s index.īMI is a way to discover if you are overweight, obese, underweight or normal. For most people, BMI is a good predictor of health problems that are linked to excess weight. BMI is a person's weight in kilograms divided by his/her height in meters squared.
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