What’s the Average Height and Weight by Age?

The Average Height and Weight by Age: People come in all shapes and sizes, which is part of what makes everyone unique. When it comes to a person’s height and weight, genetics and biological sex play a big role. But these are not the only factors involved.

Access to nutritious food is another important influence behind a person’s height, per the U.S. National Library of Medicine. Similarly, lifestyle habits, where a person lives and works, and other factors may affect weight, too, per the National Institute of Diabetes and Digestive and Kidney Diseases.

Whether you’re a concerned parent or just want to know where you stand with your own weight, comparing your values to the national average is a helpful place to start.

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Children’s Height and Weight

Pediatricians use height and weight charts to measure a child’s development and track growth and weight gain throughout childhood. This gives medical professionals a clear idea of your child’s development and can help reveal if there are any health conditions to consider.

Tip
If you are concerned about your child’s height or weight for their age, consult your pediatrician or another qualified medical professional.

Want to know if your child’s height is normal for their age? Consider these average values.

Average Height and Weight for Girls

For the most part, girls grow at the same rate as boys until the last part of primary education. At this point, they usually grow faster than their male peers. Below is the average height for girls by age, according to the Centers for Disease Control and Prevention (CDC).

2 to 8 Years

The average height of a 2-year-old girl is 34 inches and her weight is 27 pounds. By age 4, the average height is 40 inches and the average weight is 34 pounds. At age 6, the average height grows to 45 inches and the average weight is 46 pounds. Finally, an 8-year-old girl has an average height of 50 inches and an average weight of 58 pounds.

10 to 14 Years

At the age of 10, the average girl is about 54 inches tall and weighs 72 pounds. By age 12, the average height increases to 59 inches with an average weight of 95 pounds. Fourteen-year-old girls average 63 inches tall and 109 pounds.

16+ Years

After the age of 14, girls begin to flatten in height. The average height of a 16-year-old girl is 64 inches and her weight is 119 pounds. From age 18, weight increases by about 130 pounds, while height narrows to 64 to 65 inches.

Average Height and Weight for Men

The average height of young boys is relatively similar to that of young girls. While girls tend to shoot in grade school, boys catch up quickly in late adolescence. Here are the average male heights for age, according to the CDC.

2 to 8 Years

Two-year-old boys average 34 inches tall and weigh 28 pounds. At age 4, they grow to about 40 inches tall and weigh 36 pounds. By age 6, boys are usually on average 45 inches tall and weigh 46 pounds. Eight-year-old boys average 50 inches tall and weigh 56 pounds.

10 to 14 Years

At age 10, boys average 55 inches tall and weigh 68 pounds. By age 12, those figures increase to 58.5 inches and 90 pounds. At age 14, boys average 64 inches tall and weigh 112 pounds.

16+ Years

From the age of 16, boys continue to grow faster than girls. A 16-year-old boy averages 68 inches tall and weighs 134 pounds. Males aged 18 to 20 are on average 69 to 70 inches tall and weigh 148 to 155 pounds.

Average Body Weight and Height of Adults

When you’re an adult, your bones have stopped growing, which means your height has stabilized – height values remain fairly consistent across age groups. But your body weight isn’t necessarily static. Healthy average body weight is measured by the height-to-weight ratio.

Here are details on the average body weight for men and women, per the CDC.

What’s the Average Height and Weight by Age?

Average Height and Weight for Men

Just as women do, men tend to experience an increase in weight in middle age, which then drops off after the age of 60.

​20 to 39 years

​Between the age of 20 and 39, the average man weighs about 89 kilograms or 196 pounds. Typically, men’s height is about 69.3 inches or 5’8″.

​40 to 59 years

​Men typically reach their heaviest weight during this age range, weighing about 91 kilograms or 200 pounds. At this age, men are usually about 69.2 inches tall or 5’8″.

​60+ years

​After age 60, weight begins to decrease more significantly. At this point, the average man weighs about 88 kilograms or 194 pounds. Here, men are about 68.3 inches tall or 5’7″.

Average Height and Weight for Women

Women are usually shorter and lighter than men. The average weight change is not severe, but increases until middle age and then decreases towards old age.

​20 to 39 years

Between the ages of 20 and 39, the average weight of women is about 76 kilograms or 167.5 pounds. At this age, females are usually around 64 inches or 5’3″ tall.

​40 to 59 years

A woman’s weight is at its peak between the ages of 55 and 60, with the average woman weighing around 80 kilograms or 176 pounds. Generally, women in this age range measure around 63.8 inches or 5’3″.

​60+ years

The average woman’s weight begins to decrease after age 60. After this age, the average weight tends to drop to about 75.5 kilograms or 166 pounds. These women are usually about 62.7 inches tall or 5’2″.

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