What is the average height of an 8-year-old kid?

At 8, children experience a critical crossroads in their growth path. This period marks a transition from early childhood to middle childhood, characterized by rapid physical, cognitive, and emotional development. Understanding an average height is vital for assessing whether a child is growing properly. Keep scrolling to know further!

What is the average height of an 8-year-old kid?

According to reputable sources, such as the Centers for Disease Control and Prevention (CDC), the average height range for 8-year-olds falls between 47 to 54 inches or 119 to 137 centimeters. Specifically,

  • The average height range for 8-year-old boys falls between 49 to 54 inches or 124 to 137 centimeters.
  • Similarly, the average height range for 8-year-old girls is approximately 47 to 53 inches or 119 to 135 centimeters.

What do growth charts tell you?

When your kid is not in the average height range mentioned above, you might wonder whether they are growing well or suffering any issues. Then you visit a doctor, but she says they follow the curve. What does that mean?

Healthcare professionals often use growth charts to interpret “good,” “healthy,” or “bad” growth. These charts are separate for weight, height, and head circumference. The percentile lines on the chart include 5%, 10%, 25%, 50%, 75%, 90%, and 95% [1].

For instance, if your child’s weight is at the 50th percentile line, that means out of 100 normal children their age, 50 will be bigger than they are and 50 smaller. But if they are in the 75th percentile, they are bigger than 75 children and smaller than 25.

In fact, the growth percentiles do not say much. However, what matters is the growth rate.

  • A child is considered to have a normal rate of growth when their growth points closely align with a percentile line on the chart.
  • We often do not worry about excessive or insufficient growth until a child’s growth rate has crossed two percentile lines (below the 50th and above the 90th).
  • If the weight, height, or head size of a child is under the 5th, it is necessary to check whether their growth points have always paralleled the 5th percentile line or if they are suddenly falling further behind.

In case you want to check whether your 8-year-old kid is too overweight or skinny, try a BMI (Body Mass Index).

  • 4th percentile or lower means underweight
  • 5th to 84th percentile means healthy weight
  • 85th to 94th percentile means overweight
  • 95th percentile or higher means obese

Tips to help an 8-year-old kid foster their growth


What to eat

Offering your child the right balance of nutrients will maximize their growth potential, especially when they are at 8.

  • Protein is one of the most important nutrients to help kids reach their full growth potential. Consuming at least 19 grams daily of protein-rich foods, like lean meat, fish, chicken, eggs, dairy foods, legumes, soy products, nuts, and seeds.
  • Vitamin D is vital for all ages in supporting bone health. In the early years, it is crucial in building strong bones, as well as reducing inflammation and enhancing the immune system. It is easy to get vitamin D from sunlight exposure. Also, it is rich in salmon, trout, plant-based milk, vitamin D-fortified milk, fortified cereal, and supplements.
  • Calcium, of course, plays an essential role in building strong bones and teeth. Over 90% of your child’s peak bone mass will be built before reaching 20s, meaning the early years are important to form bone density. For kids at 8, consuming 1,000 mg is recommended. You can get it from cow’s milk, yogurt, cheese, almonds, fortified plant-based milk, tofu, kale, broccoli, spinach, and more.
  • Vitamins and minerals are also vital in maximizing kids’ growth. However, key nutrients for growth acceleration include vitamin A, zinc, and iron, according to a 2010 study. Vitamin A-rich foods are present in carrots, sweet potatoes, spinach, pumpkin, cantaloupe, tomatoes, mangoes, and peppers. Meanwhile, zinc and iron are rich in seafood, lean red meat, legumes, and dark-meat chicken.

Aside from consuming a variety of nutrient-dense foods, getting enough calories is necessary for proper growth in children, as well as support growth for those who were malnourished previously. Kids from 4 to 8 need 1,200 to 2,000 calories daily. The more active they are, the more calories they need to maximize their growth and development. Typically, boys require more calories than girls.

What to play

Children at 8 should aim for 60 minutes of their day engaging in moderate-intensity exercises, such as playing in the playground, cycling, riding a scooter, skateboarding, or walking the dog or to school. Also, they should try bone and muscle-strengthening activities, including running, walking, climbing, skipping with a rope, dancing, swimming, or playing sports.

Note: Kids who join sports are at risk for injuries, so make sure to give them the proper protective equipment. A child with a disability or a chronic health condition should not be excluded from physical activities. Find a suitable one by consulting your doctor.

How much sleep

At 8, kids need to sleep between 9 and 12 hours per night to help them show improvements in learning, memory, behavior, mental health, physical health, emotional regulation, attention, and overall quality of life.

So, how to have a good night’s sleep?

  • Set up a bedtime routine to help kids wind down from the day. For instance, if they often go to bed at 7.30, you should guide them to take a bath, brush their teeth, and go to the toilet at 6.45. Then spend the quiet time in the bedroom with a book at 7.15. Finally, say goodnight and lights out at 7.30.
  • Make sure to keep regular sleep and wake times, even on the weekend.
  • Turn off electronic devices an hour before bedtime.
  • Avoid caffeine in sports drinks, coffee, tea, and chocolate before bed.
  • Make the bedroom quiet and dimly lit to sleep.


What if my child is outside the average height range?

It is essential not to panic first. Because height can vary significantly among children due to factors, such as genetics, nutrition, and overall health. However, if you have concerns about your child's height, you should consult a pediatrician for a thorough evaluation.

How much do 8-year-olds typically grow every year?

On average, they experience a growth rate of approximately 2 to 2.5 inches (5 to 6 centimeters) per year.

Is there any correlation between a child’s height at 8 and their adult height?

While a child's height at age 8 can provide some indication of their potential adult height, it is not a definitive predictor. However, children significantly shorter or taller than average at 8 may continue to track along a similar growth curve as they approach adulthood. 

To sum up,

It is clear that height is more than just a numerical measure—it is a window into a child's physical development and overall well-being. While we have delved into the typical height range for children of this age, remember that every child is unique, and their growth journey may unfold differently. Whether they are soaring above the average or charting their path, what truly matters is that they are healthy, happy, and supported in their growth and development.



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