The average adult man in the United States weighs about 199 pounds (90 kg) and the average adult woman weighs about 172 pounds (78 kg), according to measured data from the CDC's National Health and Nutrition Examination Survey (NHANES). Those are the headline figures most people come here for. But the story behind them matters just as much as the numbers, because both averages sit in the overweight BMI range, meaning the typical American adult weighs more than health guidelines recommend. Understanding what the average actually represents, and why it differs from a healthy target, is the most useful thing this page can give you.
This article is general health information compiled from publicly available CDC data and is not a substitute for professional medical advice. If you have questions about your own weight or health, speak with a doctor or registered dietitian.
The figures throughout this page come from two CDC sources: the FastStats body measurements page and the underlying NHANES survey data, which uses direct physical measurements rather than self-reported weights. Self-reported surveys consistently underestimate average weight, so NHANES measured data gives a more accurate picture of where the US population actually stands.
Average weight by age group
Weight is not constant across adulthood. CDC NHANES data breaks the adult population into three broad age groups, and the pattern is consistent for both men and women: weight rises from early adulthood into middle age, then eases back after about age 60. The table below shows the approximate measured averages for each group, in both pounds and kilograms.
| Age group | Average man | Average woman |
|---|---|---|
| 20 to 39 | 196 lb / 89 kg | 166 lb / 75 kg |
| 40 to 59 | 203 lb / 92 kg | 176 lb / 80 kg |
| 60 and over | 197 lb / 89 kg | 166 lb / 75 kg |
| All adults 20+ | 199 lb / 90 kg | 172 lb / 78 kg |
For men, the peak age group is 40 to 59, where the average reaches 203 lb (92 kg). Women follow the same arc, with the 40 to 59 group averaging 176 lb (80 kg) compared to 166 lb (75 kg) in younger and older brackets. The modest drop after 60 reflects the natural loss of muscle mass and overall lean tissue that comes with aging, rather than a deliberate change in eating or exercise habits.
How average weight changes through life
The rise in weight from young adulthood into middle age is partly biological and partly driven by lifestyle changes. Metabolism slows gradually after the mid-twenties, and many adults become less physically active as work, family, and other demands increase. Muscle mass, which burns more calories at rest than fat, tends to decline from the late thirties onward unless maintained through resistance training. The combination means that eating and activity patterns that held weight steady at 25 often lead to gradual gain by 40.
The easing of average weight after age 60 is real but should not be misread as a health gain. In many cases it reflects a loss of muscle and bone rather than a reduction in body fat. Body composition shifts with age, so two people who weigh the same at 35 and 65 may have very different proportions of muscle, fat, and bone. The scale number alone captures none of that nuance.
An average is not a healthy target
This is the single most important point on this page. The average US adult weight sits in the overweight BMI category. For a man of average American height (about 5 feet 9 inches), a weight of 199 lb gives a BMI of roughly 29.4, which falls just below the obesity threshold of 30 and well above the healthy range of 18.5 to 24.9. For a woman of average American height (about 5 feet 4 inches), a weight of 172 lb gives a BMI of about 29.5, in the same overweight zone.
Knowing that you weigh about the same as the average American adult tells you where you stand relative to the current population. It does not tell you whether that weight is healthy for your height and body composition. If you want to understand what a healthy weight looks like for your specific situation, our guide on how much you should weigh walks through the evidence-based tools, including BMI, waist circumference, and waist-to-height ratio. For women specifically, the guide on healthy weight for women goes deeper on how body composition and health risk interact.
What a healthy weight actually looks like
Health authorities define a healthy weight range rather than a single number, because height, age, sex, and body composition all matter. The most widely used measure is body mass index (BMI), which the CDC defines as healthy between 18.5 and 24.9. For a 5-foot-9 man that translates to roughly 125 to 168 lb. For a 5-foot-4 woman it means roughly 108 to 145 lb.
BMI has real limits. It does not distinguish muscle from fat, and it can misclassify muscular people as overweight or underweight people with high body fat as healthy. Waist circumference adds useful information: the CDC considers a waist above 40 inches in men and above 35 inches in women to be associated with higher health risk regardless of BMI. Waist-to-height ratio, which compares waist circumference to height, is increasingly used by researchers because it accounts for body size more fairly across different heights and ethnicities.
None of these tools gives the full picture on its own. A doctor or registered dietitian can combine measurements, bloodwork, family history, and lifestyle factors to give a much more accurate assessment than any single number.