Ideal Weight Calculator
- 1 Ideal Weight Calculator
- 2 What is my ideal weight for my height?
- 3 The ideal weight calculator
- 4 The formulas for calculating the ideal weight
- 5 The result of the ideal weight calculator
- 6 The interpretation of the ideal weight according to age
- 7 Factors for an ideal weight formula
- 8 How to adapt your ideal weight result?
What is my ideal weight for my height?
Many factors go into determining your ideal weight.
You must first enter your current weight, gender, age, height, bone density, muscle and fat mass.
The most popular indicator for assessing a healthy weight is the body mass index or BMI.
This calculation approved by the World Health Organization performs a ratio between your height and your weight and gives a mathematical result making the balance between the kilos and the centimeters.
The body mass index fluctuates between 18.5 and 25 in the WHO standard.
- Below 18.5: a sign of thinness.
- Between 18.5 and 25: normal build.
- Between 25 and 29.9: a sign of overweight
- Between 30 and 34.9: moderate obesity.
This indicator is used by the medical world to quickly obtain an estimate of weight that could potentially cause health problems.
Very often, too large a BMI can lead to heart risks, declaration of diabetes, and various obesity-related conditions.
Doctors use it to warn their patients of potential health issues, especially when they note that their patient’s BMI keeps on increasing grow.
The Body Mass Index is currently the official formula for calculating obesity in various degrees.
This indicator is useful but some feel that body mass index is not right.
Indeed, some examples show that a person who is not unhealthy or overweight can very well be categorized as obese.
But the most striking thing is that the body mass index does not take into account the major factors that determine a healthy weight.
Nothing about age, gender, muscle mass, and bone density, it only uses weight and height to give an estimate of the overall population.
Studying millions of profiles, it turns out that BMI is just a decent indicator of a body fat percentage without no distinction.
But what you are looking for is not in this schema.
The ideal weight calculator
The ideal weight calculator is different in that it takes into account weight, height, gender, and bone density.
Of course, it’s not quite complete because it doesn’t include muscle mass, but you can still adapt it to your personal case.
You must first assess your bone density and to achieve this, you just need to measure your wrist circumference.
A simple test by clasping your wrist with the thumb and middle finger of your opposite hand can give you an indication.
If your thumb and middle finger touch while clasping your wrist, your bone density is normal.
If a large gap prevents the two fingers to join, your density is important, your bones are above the usual norm.
On the other hand, if your two fingers overlap, your bone density is lower than the norm.
This indicator will allow you to calculate your ideal weight.
The formulas for calculating the ideal weight
There are four different formulas to calculate this indicator:
G. J. Hamwi’s formula (1964)
|Male:||ideal body weight (lbs) = 106 lbs + 6 lbs per inch over 5 feet.|
|Female:||ideal body weight (lbs) = 100 lbs + 5 lbs per inch over 5 feet.|
This formula in pounds was invented for calculating drug dosages.
To get a more accurate ideal weight, the result is adjusted by adding 10% for overweight people or subtracting 10% for thin people.
B. J. Devine’s formula (1974)
|Male:||ideal body weight (kg) = 50 + 2.3 kg per inch over 5 feet|
|Female:||ideal body weight (kg) = 45.5 + 2.3 kg per inch over 5 feet|
Somewhat similar to the Hamwi formula, its major use was in the precise dosage of drugs according to weight and height.
Over time, this formula has become the reference for calculating the ideal weight.
It is not perfect, however, and it is admitted that it underestimates the weight of small women.
J. D. Robinson’s formula (1983)
|Male:||ideal body weight (kg) = 52 kg + 1.9 kg per inch over 5 feet|
|Female:||ideal body weight (kg) = 49 kg + 1.7 kg per inch over 5 feet|
J.D Robinson adapted and slightly modified the Devine formula in 1983.
But this index is limited by the fact that it only takes into account the height of the person and is only based on data from the American population.
D. R. Miller’s formula (1983)
|Male:||ideal body weight (kg) = 56.2 kg + 1.41 kg per inch over 5 feet</td >|
|Female:||ideal body weight (kg) = 53.1 kg + 1.36 kg per inch over 5 feet</td >|
This is a simplification of the Devine formula that has a bias.
Indeed, it is only based on the stature of the person and overestimates the weight when the latter is very tall or very short.
The result of the ideal weight calculator
As mentioned above, our calculator is based on Devine’s formula established in 1974 but provides you with different calculation methods.
Its result is the most convincing, but no science is perfect.
The final index isn’t right if you don’t add 10% to the result and subtract 10% from that same result to get an ideal weight range.
Likewise, your bone density also matters.
If your body frame is substantial, you should consider the upper range of your result.
If your frame is sub-par, you should consider the lower range of your result.
If your frame is normal, place your ideal weight in the middle of the indicated range.
The interpretation of the ideal weight according to age
A 75-year-old woman should set her ideal weight in the high range because as we age we lose muscle mass.
It is therefore more reasonable to be at a slightly higher ideal weight to compensate for this loss.
In the same way, a sporty 20-year-old woman has greater muscle mass and must therefore place her ideal weight in the upper range of the result.
Factors for an ideal weight formula
Actually, age is not a determining factor of ideal weight once growth is complete.
On the other hand, it is important to remember that human beings, male or female, tend to lose 3 to 5cm in stature as soon as they turn 70.
Muscle mass is also impacted by aging, which significantly increases fat mass.
This process is natural, but you should also know that a healthy diet, exercise, regular sleep, and reduced stress slow down the effects of aging.
It is recognized that women weigh much less than men although they have naturally higher body fat.
This is because men have more muscle mass and muscle weighs less than fat.
Women also have a much lower bone density than men.
Finally, men are usually much taller than women.
It is obvious that the taller the person, the greater the muscle and fat mass.
His weight is therefore a reflection of his stature.
A man of the same size as a woman will see his weight increase by 10 to 20%.
Bone density is a very important factor in calculating the ideal weight.
It is categorized into low, normal, and high bone density, and is rated by the circumference of the person’s wrist.
It is defined as follows:
- Under 5’2″
- Small = wrist circumference less than 5.5″
- Normal = wrist circumference from 5.5 to 5.75″
- High = wrist circumference over 5.75″
- From 5’2″ to 5’5″
- Small = wrist circumference less than 6″
- Normal = wrist circumference from 6 to 6.25″
- High = wrist size over 6.25″
- Over 5’5″
- Small = wrist circumference less than 6.25″
- Normal = wrist circumference from 6.25″ to 6.5″
- High = wrist size over 6.5″
- Over 5’5″
- Small = wrist circumference from 5.5″ to 6.5″
- Normal = wrist circumference from 6.5 to 7.5″
- High = wrist circumference over 7.5″
- Small = wrist circumference from 5.5″ to 6.5″
A person with high bone density weighs more than a person with a low density even at the same height.
In fact, bone density affects both ideal weight and body mass index.
How to adapt your ideal weight result?
Don’t focus on a specific weight regardless of the result.
The calculation of an accurate healthy weight can only be done by taking into account the fat mass, which is still not the case here.
At the end of this test, you have an estimate of minimum weight and maximum weight in which you can evolve without danger.
Based on your bone density, you now know what specific weight you should aim for.
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