Can a child height calculator predict exact adult height?

No. It estimates a range. Final height depends on genetics, puberty timing, nutrition, health conditions and measurement quality.

Is this the same as a pediatric growth chart?

No online calculator replaces a clinician's plotted growth chart. Use it as a reference estimate and bring concerns to a pediatrician.

When should I ask a doctor about growth?

Ask if a child drops across percentile lines, grows much more slowly than expected, has delayed or very early puberty, or has symptoms that concern you.

Child Height Calculator

Estimate a child's adult height from parent heights and check a height-for-age reference position with pediatric growth-chart caveats.

Child sex

BoyGirl

Father height, cm

Mother height, cm

This calculator does not replace a pediatric visit. Estimates are for reference only and are not a diagnosis. A growth trend over time is usually more informative than one measurement; talk with a pediatric growth specialist if the child is crossing growth curves or has concerning symptoms.

Two different height questions

English search intent for child height calculators splits into two jobs: estimating adult height from parent heights and checking a child's current height against a growth-chart reference. Both results are screening estimates, not diagnoses.

midparental_{b oy} = \frac{father + mother}{2} + 6.5 cm

Common mid-parental adult-height estimate for boys.

midparental_{g i r l} = \frac{father + mother}{2} - 6.5 cm

Common mid-parental adult-height estimate for girls.

Growth trend matters most

A single online estimate cannot diagnose short stature, tall stature, delayed puberty or endocrine disease. Pediatricians look at repeated measurements, growth velocity, family pattern, puberty timing and symptoms.

How to use the result

Measure height without shoes and use the same method over time.
Use age, sex and current height for a reference percentile-style position.
Use parent heights for a genetic target-height estimate.
Discuss crossing growth-chart lines or very low/high results with a pediatric clinician.

Frequently Asked Questions

Sources and References

Calculations are based on the listed reference sources. Links open in a new tab.

Updated: June 2, 2026

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