Child Height Predictor

To estimate your child's adult height, 1. Choose the sex of the child 2. Enter the child's name (optional) 3. Enter the mother's height 4. Enter the father's height 5. Click on the calculation button. The free online "Child Height Estimator" will calculate your child's adult height for you.

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Mother Height (cm)
Father Height (cm)
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Child Name
Mother Height (cm)
Father Height (cm)
Estimated Height (cm)

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This tool provides informational content, not medical advice. Consult a professional for health issues.

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How tall will I be?

People often ask themselves, "What factors determine my height?" or "How tall will my child be?" Height is a complex combination of  genetic and environmental factors. It's a result of intertwining. Scientific studies suggest that genetics contributes significantly, usually around 60-80%. Children's height is usually influenced by the height of their parents and tends to regress toward  average height. As a result, parents who are very tall or short are more likely to have children who are closer to  average height than themselves.

Besides genetics, several factors influence a child's final adult height. These factors include diet, general health, participation in sports and physical activity, and the mother's health and age during pregnancy.

In particular, growth is fastest during infancy and early childhood, and the rate of growth slows down significantly from birth to about 2 years of age. A recovery in  growth rate then occurs during adolescence, often referred to as the adolescent growth spurt. On average, a woman's and a man's growth rates drop to zero around her 15th and 18th years, respectively. Note that some people may experience a decrease in height in midlife, and this is a phenomenon that is especially common among older people. This reduction in height  is due to factors such as decreased disc height and degenerative diseases. 

Understanding the complex interplay of these factors provides insight into how  height is determined and which factors can influence height over time.

How to Estimate the Adult Height of a Child

Estimating a child's adult height is an inherently uncertain process and several methods have been developed to make these estimates, with varying degrees of accuracy. One of these methods, considered to be more accurate than others, involves the assessment of bone age and skeletal maturity. A commonly used approach for this purpose requires radiographs of the left hand and wrist to determine bone age. Click here for the "Ideal Baby Height Calculator".

Greulich-Pyle Method

This method then compares the child's radiograph to the nearest standard radiograph in the Greulich-Pyle atlas, a collection of bone age data. Based on the child's bone age, current height and the data provided in the atlas (collected from Caucasian children between 1931 and 1942), it is possible to estimate the child's potential adult height, taking into account the percentage of remaining height growth at certain bone ages. It is important to note that the accuracy of the Greulich-Pyle method for today's children, especially those of different races, may be limited due to the historical nature of the data. For more information on Assessing Bone Age in Children, visit the article on the National Library of Medicine (NLM) website.

Khamis-Roche Method

The Khamis-Roche method is recognized as a highly precise height prediction technique that doesn't necessitate the assessment of bone age. This method relies on a child's height, weight, and the average height of both parents. The calculator provided above primarily relies on the principles of the Khamis-Roche method. It's important to note that this method is most accurate when applied to children of Caucasian ethnicity, aged between 4 and 9, who do not have any growth-related conditions or diseases.

Growth Charts

A growth curve is a percentile curve that shows the distribution of selected physical measurements in a child. Growth charts are used by pediatricians, nurses and parents to track the growth of infants, children and teenagers. Click here for "Ideal Baby Weight Calculation".
These growth charts consist of percentile curves that show the distribution of certain physical measurements for children in the United States. There are 16 graphs in total with data to compare your child's growth over time. Measurements such as a child's height, weight and head circumference can be compared to expected values based on this growth curve data from children of the same age and gender. Children's growth curves are usually quite consistent, so you can use these charts to estimate a child's adult height to some extent.

Browse CDC or WHO data to access growth charts.

What should I do to become taller?

Genetics play a major role in determining height, accounting for 60-80% of height potential. Children of very tall or very short parents tend to regress toward average height.

Other factors like nutrition, activity levels, health and medical conditions can also impact growth. Peak growth velocity occurs in infancy and early childhood. A second growth spurt happens during adolescence. On average, female growth stops around age 15 and male growth around 18.

To support optimal growth:

  1. Eat a balanced diet with lean proteins, fruits, vegetables, whole grains and dairy. Avoid excess sugar, trans fats, saturated fats and sodium.
  2. Exercise regularly to build strong bones and muscles. Weight-bearing and resistance exercises are ideal.
  3. Maintain good posture and body mechanics. Slouching can impact height over time.
  4. Get adequate sleep since growth hormone is released during sleep. Recommended sleep duration depends on age.
  5. Address any medical issues that could impair growth. See a doctor for an evaluation.

While genetics largely determines height potential, lifestyle factors like diet, activity and sleep also modulate growth especially during the rapid growth phases of infancy, childhood and adolescence. Following healthy habits can help children reach their optimal height.



#child height estimation #skeletal age in children #Greulich-Pyle method #Khamis-Roche method

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