Is it roughly correct to double the height of a 2-year old boy for his adult height?

Question

36" , 33 lbs at 2 years = ? , ? adult

reference ?

Answer 1

Yes and no. It will give you a general idea, but growth charts are more accurate for a guess. Try this one:

http://www.keepkidshealthy.com/welcome/htcalculator.html

Answer 2

Yes, if you double their height at age 2 (when they turn 2, not when they are almost 3) it is a rough estimate of how tall they will be as an adult.

The growth chart and family height of course are even better predictors, but the age 2 thing is close. I went back and looked at my baby book and my husbands. Both of us were within 1/2 inch using that method.

It is hard to account for a sudden growth spurt before or after their 2nd birthday, so that can throw it off.

Answer 3

I read somewhere that to make a prediction of a child's adult height you should average the height of the parents, in inches, then add 2 inches for a boy and take away 2 inches for a girl. For example:
Dad- 6'4"= 76 inches
Mom- 5'9"= 69 inches
Total inches= 145 Average height is 145/2= 72.5, or just over 6'
Son- 6'2"
Daughter- 5'10"

Keep in mind it's only a theory and lots of genetic factors come into play for this kind of thing. There is really no way to know for sure how tall a person will be until they reach their adult height and stop growing, but it's fun to guess and see if you are right later on.

Answer 4

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We did it with our kids and it seems pretty accurate... for us. Doubling our boys' two-year-old heights came out to 6' 4 and 6' 5" and today the older one is 17 years old and 6' 4" (we're pretty sure he's done growing, we're an early maturing family) and the younger is 14 and is already 5' 11" so he may hit 6' 5". I'm 5' 8" and our daughter's two-year-old measurement doubled has her at 5' 8" as well. She's 10 but already 4'11" tall, we expect her to hit the predicted height. Keep in mind, though, that nutrition and health can effect growth rates. If a child has good nutrition and little or no illness as a toddler s/he may be at his/her genetic maximum for his/her age, then later have an illness or eat too much junk food and never double that height because their nutrition wasn't quite there. This can be especially true for pre-teen and teenage girls who reduce calories for fashion-thinness, they diet and even fast before they are done growing, so their growth is stunted. Many girls never reach their genetic potential height for this reason. It can go the other way, too, picky toddlers who won't eat or those who have early childhood illnesses may be undersized as toddlers, but learn to eat better or become more healthy in childhood and teen years, and more than double their toddler height.

Answer 5

Height Predictor Boys

Answer 6

I've read that to guess a child's adult height, you do double their height at two years old. However, growth charts are probably more accurate as most children usually continue on the line they are following from early childhood (eg, if they are on the 50th centile at two then they will most likely be around the 50th centile at eighteen).

Answer 7

my child's doctor said it's the height at 2 years that is doubled to give a very rought est. of how tall you child will be as an adult.
So your child would be roughtly 6 foot tall

According to my son's height at 2 he is going to be 6' 8 ! =) He's four and is 47 inches tall so he's a very tall kid
If I doubled his height at the age of 3 it would make him 7 foot tall as an adult

Answer 8

If you doubled at 4 my son would be 84 inches...That is 7 feet...come on think about it people...

Actually the myth is 2 that you should be able to...accurate or not...you won't know until you get there! I was a very tall child compared to my classmates, etc. I stopped at 5 foot 4.

Answer 9

My kids' pediatrician said that wasn't accurate until age four. That's when they started using it. They also said that the average of mom's height+dad's height gives a rough estimate, although I know plenty of people taller (or shorter) than both of their parents. Although my son just turned five, and his height at his four year check up doubled was pretty much the same as the average of mine and DH's height, so maybe there is something to it.

Answer 10

Didn't work for me. I was about 3 feet at 2 years, I an now 6 feet 7 inches...

Answer 11

I seem to remember in my pediatrics course in nursing school that there is an age where a child is actually one half of his/her adult height. I think it is around three years old. There are several different factors, some are, male or female, preemie or not etc. I would recommend your asking your pediatrician.