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BMI-Rechner.net BMI calculator - Body Mass Index - Calculate BMI

Body Mass Index, BMI for short, is a mathematical method that can be used to estimate a person's body mass relative to their height. This is done by first determining a value for weight and a value for height; in kilogrammes and metres respectively. The weight is then divided by the square number of the height. The value thus obtained, and which is usually around 20, is the Body Mass Index. ... read more

BMI / Body Mass Index calculator

BMI Rechner You can calculate your BMI quickly and simply using our BMI calculator. Please fill in all fields. Moreover, the BMI calculator takes amputations into account.

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Body Mass Index Formula:

BMI Formel

Metric Formula:

                    Weight (kg)
BMI =    ----------------------------
                     Height (m)²

U.S. Formula:

                    Weight (lb) * 703
BMI =    ------------------------------------
                     Height (inch)²

BMI / Body Mass Index Charts

BMI Male BMI Female
Underweight under 20 under 19
Normal Weight 20-25 19-24
Overweight 26-30 25-30
Obesity 31-40 31-40
Strong Overweight over 40 over 40

Ideal Body Mass Index

Age Ideal BMI
19-24 19-24
25-34 20-25
35-44 21-26
45-54 22-27
55-64 23-28
over 65 24-29

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BMI - Body Mass Index

Body Mass Index Artikel Body Mass Index, BMI for short, is a mathematical method that can be used to estimate a person's body mass relative to their height. This is done by first determining a value for weight and a value for height; in kilogrammes and metres respectively. The weight is then divided by the square number of the height. The value thus obtained, and which is usually around 20, is the Body Mass Index.

Depending on the gender and age of the person for whom the BMI is being determined, there are various tables for interpreting the BMI. Men aged between 18 and 24 years with a Body Mass Index of between 20 and 25 are considered to be of normal weight. A value of below 20 indicates the person is underweight. With a BMI of over 25, the person is slightly overweight, at over 30 they are overweight and at over 40 they are considerably overweight. Elevated BMI limits apply for older men.

Women between 18 and 24 years are of normal weight when they have a BMI of between 19 and 24. Below 19, they are tending towards underweight, 24 is the start of overweight. Overweight becomes considerable at a BMI of 39 or earlier. As with men, higher limit values apply to women as they get older.

Absolute figures are not consulted to establish whether a child's body weight lies within normal limits using the BMI. Instead, the BMI of a child is compared to the average of other children. This ensures that the development stages which children in certain age groups experience are taken into account. If a child has a higher Body Mass Index than 97 percent of all children of the same age, they are considered to be overweight.

For people with one or more body parts missing due to birth defects or amputations, there are so-called correction values for determining the weight to be used for the BMI. These correction values are determined for each missing body part. A mathematical formula can be used to calculate a weight that corresponds to that of a person with all body parts.

Essentially, the Body Mass Index is merely a guide, especially for adults, since in no way does it allow for a person's particular physique. For example, the BMI of people with high bone density, highly-developed muscles or broad shoulders can be higher than the BMI of people of the same height.

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