Expected adult height from parents’ heights
The mid-parental height formula used by paediatric endocrinologists to see whether a child is growing along the family’s path. Enter both parents’ heights.
Your result appears here.
Mid-parental height–
Usual range–
This is only the “family path”. What matters is whether your child is actually growing along it — that needs current height and growth speed.
Formula and how to read it
Boys: (father + mother + 13) ÷ 2 · Girls: (father + mother − 13) ÷ 2. 13 cm is the average difference between adult men and women.
Most children reach an adult height within about ±8.5 cm of this value (American Family Physician, 2008). The formula cannot account for nutrition, sleep, illness or early puberty.