Confidence votes 7.4K. Height at Age 8 The AVERAGE 8 year old measures 4' 1. Don't forget that these measurements are AVERAGE. Half of children will be taller than this and half will be shorter.Children usually take after their parents so tall parents will have tall children, small parents will have small children.onfidence votes 7.4K. Height at Age 8 The AVERAGE 8 year old measures 4' 1. Don't forget that these measurements are AVERAGE. Half of children will be taller than this and half will be shorter. Children usually take after their parents so tall parents will have tall children, small parents will have small children.
Swing weight is the combination of the racquet's length, stationary weight, and balance point. Together, these factors determine if a racquet feels light or heavy when it's in motion. High stationary weight, head-heavy balance, and a length longer than 27 inches all increase swing weight.
Know the Guidelines. Major brand tennis racket manufacturers provide sizing guidelines to help you select the correct racket. If you child is 5 years old or younger and is 44 inches or shorter, a 19- or 21-inch racket is a good fit. If your child is age 6 to 8 and measures 45 to 49 inches, select a 23-inch racket.