Predicted Adult Target Height
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Target height (TH)
Target range (TR)
Enter parental heights and the original model category.
Statistical reference only, not guaranteed future adult height or a growth-disorder diagnosis.
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2007 equations, interpretation, and sources
Method
Boys: TH = (father height + mother height + 13) / 2 cm, TR = TH ±9 cm. Girls: TH = (father height + mother height − 13) / 2 cm, TR = TH ±8 cm.
Use cm. The 13 cm term represents a mean height difference in the original population. The +2 cm intergenerational adjustment from a 1990 version is NOT used in the 2007 revision. Round only the displayed values.
Example (hypothetical)
Father 175 cm and mother 163 cm: boys TH 175.5, TR 166.5–184.5 cm; girls TH 162.5, TR 154.5–170.5 cm.
Population and limitations
Developed for Japanese children. The original model does not define coefficients outside its stated categories. Parental genetic disorders affecting height, different historical environments, and parental height combinations may limit reliability. The UI input safeguard 30–300 cm is not a clinical applicability threshold.
Sources and review
Ogata et al. 2007, source verification: 2026-11-10.