- 1.Key Takeaways
- 2.What Is the Average Height for Men in the United States?
- 3.Average Height for Men by Age
- 4.Average Height for Men Around the World
- 5.What Factors Affect the Average Height for Men?
- 6.Is the Average Height for Men Increasing?
- 7.How to Measure Height Correctly
- 8.Does Height Affect Health, Fitness, or Career Success?
Most people Google this because they want to know where they stand — literally. That’s not vanity. Height affects how people see themselves, how they’re perceived, and — inconveniently — things like cardiovascular risk and long-term disability outcomes. The number is worth knowing accurately.
The average height for men in the United States is 68.9 inches (5 feet 9 inches). That figure comes from the CDC’s National Center for Health Statistics, based on NHANES data collected from adult men aged 20 and older between August 2021 and August 2023. (CDC NCHS FastStats)
Key Takeaways
- The average American adult male stands 5 feet 9 inches (68.9 in / 175.1 cm), per the most recent CDC data.
- Height varies by age, race, ethnicity, and birth cohort — one national average doesn’t cover everyone.
- US men are no longer among the world’s tallest; Dutch men now average over 6 feet.
- Genetics account for roughly 80% of adult height. Nutrition, sleep, and activity fill in the rest.
- American male height has been declining since men born in the early 1980s — a trend tied to nutrition, income inequality, and healthcare access.
What Is the Average Height for Men in the United States?
The CDC measures height through the National Health and Nutrition Examination Survey (NHANES), which combines interviews with physical examinations on a nationally representative sample. Participants are measured without shoes using a standardized stadiometer — no self-reporting, which matters, because men consistently overestimate their own height by about half an inch when asked to guess.
The most recent published report — Fryar et al. (2025), covering August 2021 to August 2023 — puts the mean height for US adult men at 68.9 inches. (Fryar et al., 2025, Vital Health Stat)
That’s the number to use. Not the 5’10” you see on forum discussions, not the rounded-up version that feels better. 5’9″ is the actual average.
Average Height for Men by Age
Height doesn’t stay fixed across adulthood — it just changes more slowly than most people expect.
Peak Height: Late Teens to Early 20s
Men typically reach their full standing height by their late teens, once growth plates close. For most, that window is 17–21. After that, height is stable for a few decades.
Height Loss After 40
Starting in middle age, men gradually lose height — about half an inch per decade after 50, primarily due to spinal compression, loss of disc fluid, and changes in posture. By age 70, a man who stood 5’10” at 30 might measure closer to 5’8″.
This isn’t a health crisis. It’s physics. The vertebrae compress, the discs thin out, and standing height drops. Bone density loss accelerates the process. (Wang et al., 2024, BMC Geriatrics)
For older adults tracking their own height, measuring at the same time of day matters — most people are about half an inch shorter in the evening than in the morning, after hours of gravitational compression on the spine.
Average Height for Men Around the World
The US average of 5’9″ sits firmly in the middle of the global distribution — not short by any global measure, but nowhere near the top.
| Country / Region | Average Male Height |
|---|---|
| Netherlands | ~6 ft 0 in (182.5 cm) |
| Denmark | ~5 ft 11.5 in (181.4 cm) |
| United States | ~5 ft 9 in (175.1 cm) |
| Mexico | ~5 ft 6 in (167 cm) |
| Japan | ~5 ft 7 in (170.8 cm) |
| Global average (est.) | ~5 ft 7 in (171 cm) |
Sources: NCD Risk Factor Collaboration (NCD-RisC), eLife, 2016; Fryar et al. 2025.
Dutch men have held the title of world’s tallest for decades — a lead built on consistent childhood nutrition, strong public healthcare, and relatively low income inequality. Americans were the tallest in the world in the early 20th century. That stopped being true sometime in the mid-1900s, and the gap has widened since. (Komlos & Lauderdale, 2007, Ann Hum Biol)
What Factors Affect the Average Height for Men?
Genetics: The Dominant Factor
Roughly 80% of the variation in adult height between individuals comes down to genetics. (Silventoinen, 2003, J Biosoc Sci) A landmark 2022 genome-wide study of 5.4 million people identified over 12,000 genetic variants associated with height — the largest study of its kind ever conducted. (Yengo et al., 2022, Nature)
That 80% figure is sometimes used to dismiss lifestyle factors entirely. That’s the wrong takeaway. Genetics sets the ceiling. Everything else determines whether you hit it or fall short. To understand more about how this plays out across generations, the research on short parents and tall children is worth reading — the numbers are more optimistic than most people assume.
Nutrition: The Most Powerful External Variable
Nutrition is the single most important non-genetic factor for linear growth. (Perkins et al., 2016, Nutr Rev) Adequate protein and height growth go hand-in-hand during childhood and adolescence, and vitamins for height growth — particularly vitamin D and calcium — support the bone mineralization that underlies skeletal development.
Diet quality in US children has measurable effects on height-for-age outcomes. Diets high in soft drinks and high-fat processed foods are associated with lower standardized height scores. (Kim & Keen, 2021, Nutrients)
Sleep and Growth Hormone
Most of the body’s growth hormone gets released during deep (slow-wave) sleep — not a steady trickle throughout the day, but pulses, concentrated in the first few hours after falling asleep. (Shaw et al., 2023, NSF) Disrupting that sleep disrupts those pulses. For teenagers, chronically short sleep isn’t just tiring — it’s a genuine ceiling-lowerer during the most critical growth window they’ll ever have.
Physical Activity
Weight-bearing activity is the most modifiable factor for peak bone mass during childhood and adolescence. (Reza Nouri et al., 2010, Int J Prev Med) Exercise doesn’t add inches directly, but it supports the skeletal development that determines how close a child gets to their genetic ceiling. For a practical overview, exercises to boost height naturally covers what the evidence actually supports versus what’s wishful thinking.
Is the Average Height for Men Increasing?
For most of the 20th century, the answer was yes. Better nutrition, reduced childhood illness, and improved access to healthcare drove steady height gains across wealthy countries.
The US story is more complicated now.
A Trend That Stalled — Then Reversed
American male height growth plateaued earlier than European counterparts and then began declining. Men born in the early 1980s mark the peak US birth cohort for height. Since then, average height has been falling. (Bogin & Komlos, 2025, SSM – Population Health)
The decline ranges from about 0.68 cm in White women to 1.97 cm in Hispanic men across affected cohorts — small individually, significant at the population level.
The suspected causes: rising income inequality, worsening diet quality, higher rates of childhood obesity, and uneven healthcare access. The US spends more on healthcare than any comparable country and gets shorter people. That’s not a coincidence — it’s a measurement of how those expenditures are distributed. (Bogin et al., 2017, Am J Hum Biol)
Meanwhile, heights in countries with stronger social safety nets and lower inequality continued rising through the same period. (NCD-RisC, 2016, eLife)
How to Measure Height Correctly
Getting an accurate measurement is less obvious than it sounds. A few things that consistently introduce error:
Time of day matters. Measure in the morning, before prolonged standing or activity, for the most reproducible number. Evening measurements run slightly shorter due to spinal compression.
Stand without shoes on a hard, flat surface. Carpet compresses unevenly. Shoes add anywhere from half an inch to two inches depending on sole thickness.
Use a wall-mounted tape measure or a proper stadiometer. The process: stand with heels, buttocks, and shoulders touching the wall. Look straight ahead (the Frankfort plane — ears level with eyes). Lower a flat object (a book works) to rest on the crown of the head, mark the wall, and measure from floor to mark.
For tracking children’s growth over time, the CDC growth charts are the standard clinical reference in the US.
Does Height Affect Health, Fitness, or Career Success?
Health Outcomes: The Evidence Is Real, If Overstated
Taller men do show some differences in cardiovascular disease and disability outcomes. A large NHANES study of over 21,000 US adults found associations between height and hypertension prevalence. (Hassan et al., 2021, BMJ Open) Separately, research on adults 60 and older found height associations with physical disability risk. (Wang et al., 2024, BMC Geriatrics)
These are population-level associations — not deterministic for any individual. A 5’7″ man with a good diet and regular activity is at far lower cardiovascular risk than a 6’2″ man who doesn’t move and eats poorly.
Sports: Yes, It Helps in Some Contexts
Certain positions in basketball, volleyball, and rowing genuinely favor taller athletes. Most sports don’t. Many elite endurance athletes, gymnasts, and wrestlers are below the national average height. The best sports to boost height during development is a slightly different question — it’s about activity quality during growth years, not sport selection as an adult.
Career: The Research Exists, But Context Matters
Studies have found height associations with earnings and social perception — one estimate suggests a one-inch increase in height is associated with roughly $800 more in annual earnings. That’s a real finding, but it reflects social bias, not biology. Taller people aren’t inherently more capable. The workplace height premium is a measurement of how height is perceived, not what it produces.
Frequently Asked Questions
People often treat 5'8" like it lands in some clearly “short” category, but that’s usually not how the numbers work out. In a lot of countries, 5'8" sits close to the middle or just a touch under it. In the United States, where average male height is about 5'9", you’re looking at a gap of roughly one inch. That’s small. And depending on where you are globally, 5'8" can read as average, sometimes even a bit above it.
When height rankings come up, the Netherlands almost always enters the conversation first. Dutch men are commonly reported at around 183 cm, which is about 6'0". That figure shows up again and again across international comparisons, so this isn’t one of those stats that disappears the second you check another dataset.
This gets oversimplified a lot. Height does connect with certain health patterns, yes, but it doesn’t quietly decide how long you live. Day-to-day factors carry far more weight: smoking, exercise, medical care, metabolic health, long-term disease risk. The link is real, but it’s loose, not fate.
Once growth plates close, actual height gains become very unlikely. Better posture, decompression, and strength work can change how tall you look—or even how you measure on a given day—but they don’t typically add new bone length.
References
- Body MeasurementsScholarly Article
- Dent Regist. 1878 Feb;32(2):79. Man’s Average HeightScholarly Article
- Height and Weight of Adults 18-74 Years of Age in the United States’Scholarly Article
- The Average Height For Men USAWeb Page
- Average height and weight by countryWeb Page
