This child height calculator answers the question of how tall will your children be? We use two very different methods and describe in detail how to calculate a child's height.
If you already have a child over four years old, our future height calculator uses a scientifically proven formula to determine their height. But if your kid is younger, you're just curious, or maybe you are pregnant , we have a child height predictor that calculates the child's height basing on parents height.
It's called the Mid-Parental Height Formula. In the article below you can learn about a variety of height related topics, such as when do girls and boys stop growing and what is the average male height. Moreover, we are discussing how to get taller and whether it is possible at all. How tall will my child be? Will they be as tall as the dad or average like their grandpa? These questions thrill almost every parent during pregnancy and while the child is continuously growing in the early years.
Lots of us believe that children are usually taller than their parents. For sure, that is not a rule, and these trends vary from child to child and from family to family.
The single most significant factor here is genetics. However, environmental aspects still have a lot of impact on the child's height! Let's take a look at a few important points:. As you can see, one of the most crucial aspects is nutrition. It is so significant that scientists suggest the proper question to consider should be "How much variation the difference between individuals in height is attributable to genetic effects and how much to nutritional effects?
These numbers come from estimations of the heritability of human height and from research examining what proportions of the height variation are determined by genetics.
Basing on various scientific studies, heritability contributes to around 80 percent of a child's height. A Finnish study on almost twins arrived at results of 78 percent for men and 75 percent for women.
As we can see, the heritability varies even for men and women. These values may vary a lot between ethnic populations as well. This is mainly due to different living environments including nutrition, lifestyle and climate conditions and different genetics combinations across communities. In Asian and African populations, the height heritability is notably lower.
A similar value was found in studies done by D. Roberts in western Africa. Heritability allows us to consider how the person's height is determined.
Let's analyze it on the following example: a man who is cm 6 ft tall. The white male population has an average height of cm 5 ft 10 in with a heritability of 80 percent.
Our individual is 5 cm taller than the population average. Analysis of heritability suggests how much of his extra height is a genetic cause and how much is due to environmental factors. There are a few methods of predicting the growth of a child. Some of them use mathematical estimations as a base and are totally safe because the child is not exposed to any hazardous factors.
The one we provide here the Khamis-Roche Formula is proven to be the most accurate without the use of skeletal age. The most straightforward method Mid-Parental height formula is based on parents height.
The other conventional method of height prediction uses the roentgen radiation which is potentially hazardous. It is, however, the most accurate way. Determining the child's "bone age" is done by using X-ray medical imaging of the child's hand. The adult height of a child can be predicted using a simple mathematical equation using parent height, current child height, and current child weight.
It is valid for children above the age of four. The publication by Dr. Harry Khamis and Dr. Alex Roche was called Predicting adult stature without using skeletal age: the Khamis-Roche method. It's the most accurate method of child height prediction without determining the skeletal age. For boys, the margin of error is 2. Please note that this future child height calculator was developed by research on a group of Caucasian children so it may be less accurate for kids of other ethnicities.
The mid-parental formula is the easiest way to calculate a child's height based on parents height. Here is how it works:. You can expect a margin of error of about four inches either way. You can convert metric to imperial length units using our length calculator. As we have already discussed, a child's height is primarily determined by genetics.
However, it does not depend solely on the parents height. It's inherited in a way so that children may be taller or shorter than their parents since height inheritance is polygenic - the answer to how tall your child will be is scattered among many genes.
The maturity of a child's skeletal system might be estimated by using a bone age study. It consists of taking a single X-ray of the left wrist, hand, and fingers. It is a painless procedure that exposes the individual to a very small amount of radiation. Afterwards, the image is compared to standard images from a bone development atlas, where the references were made on large studies of kids.
Bone age is measured in years. The growth of bones is possible thanks to a particular area within two ends of long bones - the growth plate. This is a hyaline cartilage plate, which consists of actively growing cells. These plates can be found in children's bones, and, in adolescents, they turn into an epiphysial line the residue of growth plate.
American Academy of Pediatrics. Predicting a child's adult height. Updated January 27, Centers for Disease Control and Prevention. Clinical growth charts. Updated June 16, Your Privacy Rights. To change or withdraw your consent choices for VerywellFamily. At any time, you can update your settings through the "EU Privacy" link at the bottom of any page.
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I Accept Show Purposes. Two Years Times Two Method The "two years times two" method for predicting your child's future height is as easy as it sounds. To predict your child's height with this method: Figure out how tall your child is or was at age 2. Multiply that height by 2. Follow the Curve Method The "follow the curve" method is another easy way to predict your child's potential adult height.
Genetic Potential Height Predictor. A Word From Verywell When your kids go through a growth spurt, you may wonder if they'll ever stop growing. Was this page helpful? Thanks for your feedback! Sign Up. What are your concerns? Verywell Family uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
Related Articles. When Do Boys Stop Growing? The 9 Best Bikes for Kids of Those data sets included a few hundred children each. To convert data into some kind of predictive formula, scientists have generally used skeletal age as one of their inputs. That is, rather than just relying on how old the child is, they also incorporate information from X-rays to mark skeletal growth. The more developed the skeleton, the less future growth is expected. The chart shows the correlation between child height at various ages and adult height.
At birth, the correlation between birth height or length and adult height is about 0. This is a fairly weak correlation. By age 4, the correlation is about 0. That is, for boys you can explain about 64 percent of the variation in adult height by knowing height at age 4. Imagine, for example, that you have a 4-year-old boy who is 3 feet 9 inches tall.
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