The global average adult weighs roughly 137 pounds (62 kg), though that number shifts dramatically depending on where you live, your sex, and your age. In the United States, the average is significantly higher: 199 pounds for men and about 172 pounds for women, based on CDC measurements collected between 2021 and 2023.
Global Average vs. U.S. Average
The global mean BMI for both men and women sits right around 25, which lands exactly at the threshold between “normal weight” and “overweight.” For a person of average height, that translates to roughly 137 pounds (62 kg). But this single number hides enormous variation. In high-income countries like the United States, over 60% of adults are overweight or obese. In South Asia and Sub-Saharan Africa, that figure drops to about one in five.
The U.S. numbers tell a very different story from the global picture. The average American man weighs 199 pounds (90.3 kg), and the average American woman weighs 171.8 pounds (77.9 kg). That puts Americans roughly 40 to 60 pounds above the worldwide average, depending on sex. If you’re comparing yourself to “the average human,” it matters whether you mean globally or within your own country.
How Weight Varies by Region
Body weight tracks closely with national income. The heaviest populations cluster in North America, Oceania (particularly Pacific Island nations), and parts of North Africa and the Middle East. Average BMI tends to be highest in North and South America and North Africa. European countries fall somewhere in the middle, with averages rising in recent decades. The lightest adult populations are found across Sub-Saharan Africa and South Asia, where average BMI remains well below 25.
This gap isn’t genetic in any simple sense. It reflects food systems, physical activity patterns, and economic conditions. People in wealthier countries have greater access to calorie-dense processed foods and are more likely to work sedentary jobs. In lower-income countries, daily physical labor remains common and diets tend to be less processed, though this is changing rapidly as economies develop.
Weight Differences Between Men and Women
Men typically weigh more than women at every age after puberty, largely because of differences in muscle mass and skeletal size. In the U.S., the gap is about 27 pounds: 199 pounds for men versus 172 for women. Globally the gap is narrower in absolute terms but consistent in direction.
Body composition also differs. Healthy body fat ranges are higher for women than for men. A body fat percentage of 25% or more is considered overweight for men, while the equivalent threshold for women is 36%. Women naturally carry more essential fat for reproductive and hormonal functions, so a higher body fat percentage at a lower overall weight is completely normal.
What Kids Weigh at Different Ages
Children’s weight varies widely even within the same age group. At age 10, girls typically weigh between 54 and 106 pounds, and boys fall in a similar range of 54 to 102 pounds. That range is broad because children hit growth spurts at different times, and height plays a huge role. A tall, lean 10-year-old can weigh the same as a shorter, stockier one and both can be perfectly healthy.
Pediatricians track children on growth charts that show percentiles rather than single target numbers. Where a child falls relative to their own growth curve over time matters far more than any single weigh-in.
What Determines Your Weight
The number on the scale reflects a tangle of factors, not just how much you eat or how often you exercise. Genetics play a real role. Multiple genes influence hunger signals, how quickly you feel full, and how efficiently your metabolism burns calories. In rare cases, single-gene disorders like Prader-Willi syndrome can directly cause severe obesity, but more commonly, dozens of genes each nudge weight slightly in one direction.
Environment often matters more than biology on a population level. Access to affordable healthy food, safe places to walk or exercise, neighborhood design, housing stability, and economic security all shape weight outcomes. Communities without grocery stores or safe sidewalks consistently show higher obesity rates, regardless of the genetic makeup of the people living there. Even certain environmental chemicals can disrupt metabolism and promote weight gain.
How Body Composition Shifts With Age
Total body weight often stays relatively stable in middle age while body composition quietly changes underneath. Muscle mass gradually declines after about age 30, and the rate accelerates after 60. Fat mass tends to increase to compensate, so two people can weigh the same at 35 and 65 while having very different proportions of muscle and fat. This combination of higher fat and lower muscle, sometimes called sarcopenic obesity, is common in older adults and carries its own health risks even when the scale hasn’t budged.
This is one reason weight alone is a limited measure of health. Two people at 170 pounds can have very different body fat percentages, fitness levels, and metabolic profiles depending on their age, activity level, and genetics.