Children come in all sizes. Some are too tall, others too short, and many in between. Although greatly influenced by certain genetic and environmental factors, it’s a parent’s duty to monitor the average height and weight of children so that any possible growth retardation can be identified at the onset.

Growth charts are a medical aid for doctors to evaluate your child’s height and weight. It’s also a helpful guide when you want to keep track of your child’s developmental progress. A growth chart is marked by percentile rankings, which categorize the average height and weight of toddlers according to their gender and age. With the help of these percentile rankings, one can tell if their child falls above or below average or if they are the perfect size for their tiny little bodies.

A Guide to Your Toddler’s Size and Growth

• Average Height and Weight of 1-year-old boys:

The average height for 1-year-old boys should range between 28 and 30 inches while the average weight for 1-year-old boys should be just under 23 pounds although the normal range can be anywhere between 17.5 pounds and 27 pounds.

• Average Height and Weight of 2-year-old boys:

The average height for 2-year-old boys is supposed to be 34.5 inches with a normal range varying between 32 to 36.7 inches. With the normal weight ranging from 23.5 to 33.5 pounds, the average weight for 2-year-old boys should be about 28 pounds.

• Average Height and Weight of 3-year-old boys:

It’s normal for a 36-month-old to weigh anywhere between 26.5 to 38 pounds although the average weight for 3-year-old boys should be 31.5 pounds. With regard to height, the average height for 3-year-old boys is supposed to be 37.7 inches with the normal range being between 34.5 and 40.5 inches.

• Average Height and Weight of 1-year-old girls:

The average height for 1-year-old girls is 30.5 inches while the average weight for 1-year-old girls is about 20 pounds. Normally a 12-month-old baby should weigh between 19 and 27.5 pounds and be just under 31 inches in height.

• Average Height and Weight of 2-year-old girls:

The average height for 2-year-old girls should ideally be 34 inches however, the normal range can extend to 36 inches. Usually, the average weight for 2-year-old girls is supposed to be about 26.5 pounds, although it is normal to weigh anywhere between 22.5 and 32 pounds.

• Average Height and Weight of 3-year-old girls:

With a normal range of just below 35 to 40 inches, the average height for 3-year-old girls should be 37.5 inches. As to how much should a three-year-old weigh? A toddler of this age should weigh in about 30.5 pounds with the normal range being between 25.5 to 38 pounds.

If your child’s height and weight fall short of these ranges or percentile rankings on the growth chart, don’t assume any potential growth problems right away. Some children develop slowly while others exceedingly fast. However, if you notice any drastic change in their growth patterns, consult with your doctor.