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Some rely on their gut feeling, others on the display of their scales. Still others swear by a measuring tape that they put around their waist. As different as all these measuring methods are, they have one thing in common: they are quite vague. After all, there are many factors that determine what weight is good for your health. It can also be more precise.
BMI, the formula for the ideal weight
The Body Mass Index, BMI for short, is the most common ideal weight calculator of our time. You determine it by comparing your body weight in kilograms with your height in meters to the square. And so the whole thing looks like a formula:
body mass index = body weight : (height)²
An example: A man with a height of 1.85 metres weighs around 80 kilograms. Does he have his ideal weight? Let’s let the BMI calculator decide.
man’s body mass index = 80 : (1,85)²
Everything in the green area: With a BMI value of 23.37 the man moves in the weight class 18.5 to 24.9. He is of normal weight.
Calculating the ideal weight – a look at the BMI table
The first step is done: Your BMI value is set. To calculate your ideal weight, however, it takes more than juggling numbers. Just as important as the formula is the BMI table. And it has two messages for you: your weight class and your risk for weight-related secondary diseases.
|Weight class||BMI female*||BMI male*||Risk of sequelae|
|Underweight||< 19||< 20||low|
|Normal weight||19-24||20-25||on average|
|severe obesity||> 40||> 40||very high|
*using the example of a 19-year-old person
What is my ideal weight? The thing with age
The ideal weight calculator takes age into account as well as weight and height. But why is that so important?
The ideal weight doesn’t stay the same all your life. With age it shifts. Depending upon stage of life a few kilos more or less count as healthy. A larger upheaval begins from about 40 years; in these life years the metabolism often changes. You put on fat pads and gain weight naturally without suffering from obesity. The result: your normal weight shifts and with it the recommended BMI.
But the opposite can also happen. It is not uncommon for you to lose muscle mass as you get older, which in itself is significantly more than fat. Your body weight will then be correspondingly lower. It can even indicate underweight, although you do not run the risk of losing weight.
If you want to calculate your ideal weight, you should also take a look at this table:
|Age||Ideal BMI margin female||Ideal BMI margin male|
The birth of the ideal weight calculator
The Belgian mathematician Adolphe Quetelet is regarded as the inventor of the body mass index. In the 1840s he was interested in human weight from a statistical point of view. After numerous studies, he came to a groundbreaking conclusion: the weight of a healthy person is approximately proportional to the square of his body length. In other words, a 20 percent taller person weighs up to 44 percent more.
That’s how you get to a healthy level
According to the BMI calculator, you will reach your ideal weight? Congratulations, you are on the right track! Nevertheless, you should not just rely on it. After all, your body weight is dynamic and depends above all on your living and eating habits. Therefore you have to care for it. And so you take care of it:
- calculate ideal weight regularly
- drink a lot (at least 1.5 liters per day)
- be active (at least one hour of sports per week)
- balanced nutrition
- only now and then sweet snacks
- meaningful meal-eating breaks rhythm
- BMI-Rechner: Ihren Body-Mass-Index schnell und kostenlos ermitteln | Apotheken-Umschau
- Global BMI Mortality Collaboration, Di Angelantonio E et. Al. (2016) Body-mass index and all-cause mortality: individual-participant-data meta-analysis of 239 prospective studies in four continents. Lancet Diabetes Endocrinol.;388(10046):776-86. doi: 10.1016/S0140-6736(16)30175-1
- Tobias DK, Hu FB. (2018) The association between BMI and mortality: implications for obesity prevention. Lancet Diabetes Endocrinol. 6(12):916-917. doi: 10.1016/S2213-8587(18)30309-7
- 10 Regeln der DGE – DGE