Height Calculator - Child Height Predictor

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The mid-parental method uses only parental heights - fast and good for any age. Khamis-Roche also uses the child's current height, weight, and age for a tighter estimate (margin of error about 2 inches vs 4 inches).
Father's adult standing height in centimetres.
cm
Mother's adult standing height in centimetres.
cm
Child's standing height without shoes.
cm
Child's body weight in kilograms.
kg
Predicted adult heightAbove average
178cm

Best-estimate adult stature

Predicted height (ft/in)5 ft 10 in
Low end of range169.5cm
High end of range186.5cm
Likely range169.5 to 186.5 cm (5 ft 7 in to 6 ft 1 in)
Mid-parental height171.5cm
178 cm
Short<150Below avg150-165Average165-180Above avg180-195Tall195+

Predicted adult height: 178.0 cm (5 ft 10 in)

  • The predicted adult height is 178.0 cm (5 ft 10 in), with a likely range of 169.5 to 186.5 cm.
  • The mid-parental height (average of both parents) is 171.5 cm. The gender-adjusted target adds or subtracts 6.5 cm from that midpoint.
  • The mid-parental method has a margin of error of about 4 inches (10 cm). Actual adult height depends on nutrition, health, sleep, and other environmental factors during childhood.
  • Boys typically stop growing around age 16-18, when growth plates in the long bones close.

Next stepFor the most accurate prediction, combine this estimate with a bone-age X-ray (Greulich-Pyle method), which is the gold standard used by pediatric endocrinologists.

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