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Height Calculator

Predict your child's future height with this calculator.

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About Height Calculator

The calculator is specifically developed for parents who remain curious about their child’s future height. Whether you are a parent of a child over four years old, a new parent, or even expecting, it offers two reliable methods to predict your child’s future height:

  1. A regression-based model using age, gender, and weight (ideal for older children)
  2. The Mid-Parental Height Formula (perfect for younger kids or during pregnancy). 

Our tool uses science-backed formulas to answer the question: “How tall will my child be?” with high accuracy. It also features a visual chart comparing your child’s estimated adult height with both parents, displayed in centimeters and feet/inches for easy visualization.

How Does the Calculator Work?

The Calculatored’s child height calculator is very easy to use:

  1. Select the Formula: First, choose which formula from the drop-down list
  2. Enter the Required Values: Provide all necessary inputs available and select units
  3. Initiate Calculations: Click the ‘Calculate’ button to predict the future adult height of a child

How to Calculate a Child’s Future Height?

But various scientifically proven ways can help estimate your baby adult height.

The Khamis-Roche Method (Most Trusted Child Height Predictor Formula)

Predicted Adult Future Height = (a * Child’s Current Height) + (b * Mid-Parent Height) + (c * Weight) + d

Where;

  • Mid Parent Height = Calculated as the average of parents’ heights
  • a, b, c, and d are coefficients based on large-scale data
  • These coefficients change with the age and gender of the child

Reference: Khamis, H. & Roche, A.F., 1994. Predicting adult stature without using skeletal age: the Khamis-Roche method. Dayton, OH: Wright State University.

Mid-Parental Child Height Method - How Can I Estimate How Tall I Will Be?

$$ \text{Mid-parental height} = \frac{\text{Mother's Height} + \text{Father's Height}}{2} $$

For Boy’s Future Height:

$$ \text{Boy's Height} = \text{Mid-parental height} + 2.5\ \text{in} \quad \text{or} \quad + 6.5\ \text{cm} $$

For Girl’s Future Height:

$$ \text{Girl's Height} = \text{Mid-parental height} - 2.5\ \text{in} \quad \text{or} \quad - 6.5\ \text{cm} $$

Other Methods:

CDC Charts:

The data provided by our children’s height calculator is also based on standard growth charts. The growth of a child shows a consistent curve, which allows doctors to easily look at the increasing height of the child on a comparison basis. Among the most trusted chart resources are WHO (for kids between 0-2 years) and CDC (for kids above 2 years).

During the assessment, the measurements such as height, weight, and circumference of the head of a child are compared with the data available in almost 16 growth charts.

Bone Age Test:

Bone age estimation uses X-rays of a child's hand and wrist to assess skeletal maturity and predict future height. By comparing the X-ray to a standard reference like the Greulich-Pyle atlas, doctors determine how advanced a child's bone development is.

This information helps evaluate how much growth remains by checking if the growth plates are still open. Open growth plates indicate that a child is likely to grow taller, while closed plates suggest that growth is nearly complete.

Doctors then combine bone age with other data, like the child’s current height, age, and parental heights, to estimate adult height. However, factors like genetics, nutrition, and health conditions can affect the accuracy of this prediction.

Factors Affecting the Height:

The child height calculator will estimate how tall the child will be and how tall will I be when grows into an adult. Genetics is the main factor that affects the child's height It's not wrong to say that the type of issues that you are facing from genetics causes to decrease the height. 

Some studies indicate there is about a 60 to 80% role of genetics in height. The height of any person can be determined by knowing their combination of genetics and environmental factors. So, look at these, which are listed below:

  • Hormones and Socio-economic factors
  • Birth weight and gestational age
  • Health Issues / Diseases and Nutrition
  • Generic Conditions and Physical Activity and Exercise

Boys and Girls Height Chart:

Some boys reach their full adult height before age 17, and some grow about 3 inches per year during puberty. It occurs between 10 to 17 years. On the other hand, girls usually stop their height before age 15. To tackle heights and know at what age how much height will be. Look at the tables below:

Age (years) Median female height Median male height
4 3 ft 3 in 101 cm 3 ft 4 in 102 cm
6 3 ft 9 in 115 cm 3 ft 9 in 115.5 cm
8 4 ft 2 in 127.5 cm 4 ft 2 in 128 cm
10 4 ft 7 in 138 cm 4 ft 6 in 138.5 cm
12 4 ft 11 in 151.5 cm 4 ft 11 in 149 cm
14 5 ft 4 in 160.5 cm 5 ft 4 in 164 cm
16 5 ft 4 in 162.5 cm 5 ft 8 in 173.5 cm
18 5 ft 4 in 163 cm 5 ft 9 in 176 cm
20 5 ft 5 in 163 cm 5 ft 9 in 177 cm

Reference:

From the source Wikipedia: Human height, Determinants of growth and height, Role of an individual's height, Human height throughout history.

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