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Height Calculator (How Tall Will I Be)

Height Calculator (How Tall Will I Be)

Select the calculator mode and input the required parameters in their fields. The tool will readily calculate child height when he/she will be grown to an adult.



Mother's Height:


Father's Height:


Child's Sex:

Child's Age:

Child's Height:


Child's Weight:



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The height calculator will estimate your height and let you know how tall your child will be when grows into an adult. You can get height measurements in multiple alternative units as well. The tool uses a couple of scientifically proven methods to predict the maximum future height of your unborn baby.

How Tall Will I Be?

Height is a genetic process and you can only estimate it. This is because it depends upon the DNA combinations of your parents and perfect calculations in this case are not guaranteed. But our height calculator uses a couple of methods to predict your future height which includes:

Mid-Parental Child Height Method:

Now if the parents’ heights are known, you can predict the child’s height by using the equation:

(Mother’s Height + Father’s Height)/2

Girl’s Future Height = Mid-Parental Height – 2½ in (or 6.5 cm)

Boy’s Future Height = Mid-Parental Height + 2½ in (or 6.5 cm)

Khamis Roche Method:

This is one of the most accurate methods to calculate child’s height that is above the age of 4 years. The basic formula that is used by the adult height calculator is given as follows:

Khamis Roche Height = Child Weight + (Mother Height + Father Height)/2

Margin of Error:

  • For boys – 2.5 inches
  • For girls – 1.7 inches

When Do Boys & Girls Stop Growing?

Most boys stop growing at the age of 16. On the other hand, girls usually stop growing when they are 15 or when menstruation starts.

The CDC growth chart below gives a clear picture of the growth cycle of boys & girls with respect to increasing age.

Boys Height:

Age (Years) Median Male Height
Feet & Inches Centimetres
4 3.4 102
6 3.9 115.5
8 4.2 128
10 4.6 138.5
12 4.11 149
14 5.4 164
16 5.8 173.5
18 5.9 176
20 5.9 177

Girls Height:

Age (Years) Median Female Height
Feet & Inches Centimetres
4 3.3 101
6 3.9 115
8 4.2 127.5
10 4.7 138
12 4.11 151.5
14 5.4 160.5
16 5.4 162.5
18 5.4 163
20 5.5 163

How Does the Height Calculator Work?

Height prediction with this height estimator is quite fast and near to accurate. Let’s find out how!


  • Select the mode of the calculator
  • Now enter the required values in their respective fields as per the method selected
  • Tap Calculate


  • Child height (Future height for girl or boy)
  • Margin of error for height predictions

Also, you can use another height percentile calculator that will let you compare your child’s height with other children of the same height. This will allow you to make an estimation of how your baby is growing.


How Tall Will I Be at 14?

If you are a boy, you will be 162.4 cm tall at the age of 14. If you are a girl, then your average height at 14 years of age will be 159.8 cm.

How Do You Calculate Height For Age?

When your age increases by 3.5 years, your height gets doubled. And after 12 years, it gets triple. Using our accurate height calculator can let you know the actual difference in the height with every passing year.


From the source Wikipedia: Human height, Determinants of growth and height, Nature versus nurture, Role of an individual’s height, History of human height, Average height around the world