1. The significance of baby weight and height standards Baby weight and height standards refer to the measurement of weight and height of infants and young children of different ages based on the growth and development patterns of infants and young children, and the corresponding standard range is obtained. This standard is of great significance for assessing the growth and development of babies and diagnosing malnutrition and other problems. 2. How to measure your baby\’s weight and height. Measuring your baby\’s weight and height requires the use of professional measuring tools, such as baby scales and height rulers.