There's no proven way to predict a child's adult height. However, several formulas can provide a reasonable guess for child growth. Here's a popular example:
- Add the mother's height and the father's height in either inches or centimeters.
- Add 5 inches (13 centimeters) for boys or subtract 5 inches (13 centimeters) for girls.
- Divide by two.
Most children will reach an adult height within 4 inches (10 centimeters) of this estimation.
Another way to estimate a child's adult height is to double a boy's height at age 2 or a girl's height at age 18 months.
Remember, a child's height is controlled by genetics. It's also important to note that children grow at different rates. Some children begin their growth phases early, while others are late bloomers.
If you're concerned about your child's growth, talk to his or her doctor. Having the doctor plot your child's growth on a standardized growth chart can determine if your child is following his or her curve, as well as help predict adult height.
Feb. 26, 2014
- Sherar LB, et al. Prediction of adult height using maturity-based cumulative height velocity curves. The Journal of Pediatrics. 2005;147:508.
- Kliegman RM, et al. Nelson Textbook of Pediatrics. 19th ed. Philadelphia, Pa.: Saunders Elsevier; 2011. http://www.clinicalkey.com. Accessed Oct. 9, 2013.
- Rose SR, et al. A general pediatric approach to evaluating a short child. Pediatrics in Review. 2005;26:410.
- Cole TJ, et al. A chart to predict adult height from a child's current height. Annals of Human Biology. 2011;38:662.