There’s a simple formula that exists which will tell you how tall your kids will be when they’re fully grown.
I don’t recommend it as a basis for choosing the mother or father of your children, but it is a fun game for couples to play.
The formula has actually been around since the 1970s, when researchers found a child’s height could usually be accurately predicted using the average combined height of their parents.
Take each parent’s height using centimeters and add them together. Divide that number by 2. Subtract 6.5 centimeters from the number if using metric. This number is the mid-parental height for girls. This number plus or minus 10 centimeters is the range in which you could expect your daughter to fall.
Take each parent’s height in centimeters and add them together. Divide that number by 2. Add 6.5 centimeters to the number. This number is the mid-parental height for boys. This number plus or minus 10 centimeters is the range in which you could expect your son to fall….
A popular method for predicting your young toddler’s adult height is to double a boy’s height at the age of two or a girl’s height at 18 months. Most children will reach an adult height within 4in (10cm) of this estimate Additionally, a study conducted in 2013 into why siblings’ height can often vary significantly, found that adult height tends to decrease in younger siblings.