Calculates a target height range for a child from both parents' heights.
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Calculation basis and official references
Reviewed on:
This calculator is not a diagnosis, treatment plan, or prescription. Please consult a qualified clinician about your medical decisions.
Formula basis
Boys: midpoint = (father's height + mother's height + 13) / 2, range = midpoint ± 9 cm. Girls: midpoint = (father's height + mother's height - 13) / 2, range = midpoint ± 8 cm.
Calculation method
Estimates a child's genetically expected target height range from both parents' heights using the Ogata formula developed for Japanese children.
Exclusions and checks required
The Ogata formula was derived from Japanese pediatric data (1990, revisited 2007) and is a statistical estimate, not a guarantee of a child's eventual adult height.
Non-genetic factors such as nutrition and lifestyle during growth are not accounted for.
Example input:：Example: father 172cm, mother 158cm, boy
childSex
Boy
father
172
mother
158
The midpoint (171.5cm) and range (162.5-180.5cm) are statistical estimates only; individual results vary.