Most women reach their final adult height between the ages of 14 and 16, with nearly all done growing by 18. The process is governed primarily by estrogen, which accelerates the closure of growth plates in the long bones during puberty. Because girls typically enter puberty earlier than boys, their growth spurt peaks sooner and wraps up sooner too. But there is real person-to-person variation in that timeline, and understanding what drives it helps explain why some women keep gaining a centimeter or two well into their late teens while others are essentially finished growing at 13.
When the Growth Spurt Peaks
A girl’s fastest rate of height gain, called peak height velocity, tends to happen relatively early in puberty. In a longitudinal study of spinal growth in girls, peak height velocity occurred at an average age of about 11.3 years, with a range spanning roughly 9.7 to 13.4 years.1PubMed Central. Human spinal height growth: a description of normal spine growth patterns and adult spine height prediction from a longitudinal cohort That peak is when the spine and legs are elongating most quickly. After that point, growth continues but decelerates steadily. A separate study of U.S. youth confirmed that the timing of peak height velocity varies considerably across individuals even at the same stage of pubertal development, which is worth knowing if you are comparing yourself to a friend who started puberty around the same time.2PubMed Central. Relationship Between Timing of Peak Height Velocity and Pubertal Staging in Boys and Girls
This peak typically arrives a couple of years before a girl’s first period. After the growth spurt crests, the rate of height gain slows, and the remaining growth happens more gradually over the following one to three years.
How Much Height Comes After the First Period
One of the most common reference points people use is menarche, and it turns out to be a useful but imperfect milestone. A 2024 study using a mathematical growth model found that menarche occurred at an average age of 13.0 years, and girls gained an average of about 8 cm (roughly 3 inches) after their first period. The duration of pubertal growth after menarche averaged about 1.6 years.3Frontiers in Pediatrics. Timing of menarche and pubertal growth patterns using the QEPS growth model
That 8 cm average, though, hides an enormous range. The same study found that post-menarcheal growth varied from as little as 0.2 cm to as much as 31.1 cm. Girls who got their period earlier tended to grow more afterward, while those who started menstruating later had less remaining growth. This makes intuitive sense: an early period means the growth process was interrupted sooner, so there is more distance left to cover. A girl who starts menstruating at 10 is likely to add more height than one who starts at 15, though neither is guaranteed a specific final stature.
The average height at menarche was about 160 cm (around 5’3″). For many girls, menarche occurred after they had already hit their fastest growth rate, meaning the remaining growth was happening at a slower pace.
Why Estrogen Shuts Down Growth
Height gain depends on cartilage at the ends of your long bones, in regions called growth plates. These plates contain cells that divide and produce new cartilage, which then hardens into bone and makes the bone longer. Estrogen is the hormone that ultimately brings this process to an end, and it does so in both sexes. In girls, rising estrogen levels during puberty are what drive the growth spurt itself, but higher estrogen later in puberty is also what closes the growth plates permanently.
Research in animal models and human case studies has shown that estrogen does not directly trigger the growth plates to fuse. Instead, it speeds up a natural aging process within the growth plate cartilage. The cells in the growth plate have a limited number of divisions they can perform over a lifetime. Estrogen accelerates this countdown, causing those cells to exhaust their ability to divide sooner than they otherwise would.4PubMed Central. Effects of estrogen on growth plate senescence and epiphyseal fusion A study in rabbits confirmed that estrogen irreversibly depletes the progenitor cells in the growth plate’s resting zone, meaning once those cells are used up, no amount of hormonal change can restart growth.5Endocrinology. Evidence That Estrogen Hastens Epiphyseal Fusion and Cessation of Longitudinal Bone Growth by Irreversibly Depleting the Number of Resting Zone Progenitor Cells in Female Rabbits
This is why girls, who produce higher estrogen levels earlier than boys, stop growing sooner. Boys reach higher estrogen levels later and at a lower peak relative to their testosterone, giving their growth plates more time to keep working. The result is that boys typically grow for about two more years than girls do, contributing to the average height difference between adult men and women.
Growth Hormone’s Supporting Role
Estrogen gets the final say on when growth stops, but growth hormone is what fuels the process while it lasts. Growth hormone levels rise steadily through puberty in girls, tracking alongside pubertal development, but they drop off quickly once puberty reaches its final stage.6PubMed. Modifications of growth hormone secretion during female puberty This hormonal pairing explains the shape of the growth curve: rapid acceleration early in puberty when both growth hormone and estrogen are climbing, followed by a deceleration once estrogen levels get high enough to begin closing growth plates and growth hormone production starts winding down.
When Puberty Comes Early
Central precocious puberty, where puberty begins unusually early because of premature activation of the hormonal signals from the brain, predominantly affects girls. The concern is straightforward: if estrogen starts rising years ahead of schedule, it begins depleting growth plate cells sooner, which can lead to shorter final adult height.7PubMed Central. Final adult height in children with central precocious puberty – a retrospective study Girls with precocious puberty often appear tall for their age initially because they are going through their growth spurt while classmates are still growing at a pre-pubertal pace. But because their growth plates fuse earlier, they may end up shorter as adults than they would have been otherwise.
Treatment with hormonal medications can pause puberty and allow more growth time. One study from the National Institutes of Health found that girls treated before age 8 reached an average final height of about 160 cm, meaningfully taller than what had been predicted before treatment began (around 149 cm), though still somewhat shorter than their genetic midparental target of about 164 cm.8PubMed. Increased final height in precocious puberty after long-term treatment with LHRH agonists: the National Institutes of Health experience However, not every girl with early puberty needs treatment. A retrospective study found that untreated girls with central precocious puberty reached an average adult height of about 161 cm, which was only about 1 cm shorter than their mid-parental height, suggesting that for some girls the body partially compensates on its own.9Journal of Yeungnam Medical Science. Adult height in girls with central precocious puberty without gonadotropin-releasing hormone agonist treatment: a retrospective case-control study The decision to treat involves weighing how early puberty started, how quickly it is progressing, and the predicted height trajectory.
Genetics and the Environment
The single biggest factor determining your adult height is your DNA. Studies of twins have consistently found that genetics account for the vast majority of variation in both final height and the timing of the pubertal growth spurt. In girls, genetic factors explained about 86% of the variance in height during the pubertal growth period.10PubMed Central. Genetic and environmental influences on pubertal timing assessed by height growth This is why mid-parental height, a rough average of your parents’ heights, remains one of the best quick-and-dirty predictors of where you will end up.
That said, the remaining portion of variation is environmental, and it matters. Nutrition during childhood and adolescence is the most studied environmental factor. Severe or prolonged malnutrition during the growth years slows growth, and while nutritional recovery can trigger catch-up growth, the catch-up is often incomplete, meaning final adult height may still be shorter than it would have been with adequate nutrition throughout.11PubMed Central. Malnutrition and Catch-Up Growth during Childhood and Puberty Research on adolescent girls with anorexia nervosa specifically found that while their pre-illness height was normal, the illness caused real growth retardation, and even with weight restoration, complete catch-up growth was often not achieved. Ethnicity, socioeconomic conditions, and chronic illness all feed into this environmental component as well.12PubMed Central. Advances in pubertal growth and factors influencing it: Can we increase pubertal growth?
Does Intense Exercise Stunt Growth
Parents of young athletes, especially gymnasts, often worry that intense training might stunt their daughter’s growth or delay puberty to the point of compromising final height. The evidence is more reassuring than the fear would suggest. A comprehensive review concluded that gymnastics training does not appear to reduce the rate of growth or alter the timing and tempo of the pubertal growth spurt.13PubMed Central. Role of intensive training in the growth and maturation of artistic gymnasts The short stature commonly seen in elite gymnasts is more likely a result of selection bias: shorter, lighter-framed girls are better suited to the sport and are more likely to be chosen for and to succeed in competitive programs.
That said, the picture is not entirely clean. A study of elite rhythmic gymnasts found that the combination of high psychological stress and intense physical training was associated with delayed skeletal maturation and pubertal development.14PubMed. Height velocity and skeletal maturation in elite female rhythmic gymnasts Whether this delay translates to a meaningfully shorter adult height or just a later arrival at the same final height is a harder question to answer, and the research has not fully settled it. For most young athletes, moderate-to-high levels of training are not a growth concern.
How Doctors Measure Whether Growth Is Finished
If there is a clinical question about whether a girl has finished growing, the standard tool is a hand and wrist X-ray. Doctors compare the appearance of the bones in the hand and wrist to reference standards, which show what those bones look like at various stages of skeletal maturity.15Frontiers in Pediatrics. Evaluation of Bone Age in Children: A Mini-Review The most widely used methods include the Greulich-Pyle atlas and the Tanner-Whitehouse scoring system, both of which assign a “bone age” that can differ from chronological age. A 14-year-old girl whose bone age reads as 16 is closer to being done growing than her birthday would suggest, while a 14-year-old with a bone age of 12 still has considerable growth ahead.
Cervical vertebrae on a lateral neck X-ray can also give maturity information, and some clinicians use both hand-wrist and vertebral assessments together for a more complete picture.16PubMed Central. Comparative Evaluation of the Efficacy of Hand-Wrist and Cervical Vertebrae Radiography for the Determination of Skeletal Age When the growth plates visible on these X-rays are fully fused, no further height gain from long bone growth is possible. For the average girl, full fusion of the hand and wrist bones happens around age 15 to 17, though individual timing can fall outside that range.
Rare Cases Where Growth Plates Never Close on Schedule
Because estrogen is the signal that closes growth plates, any condition that prevents the body from making or responding to estrogen can allow growth to continue well past the normal age. The most striking examples come from aromatase deficiency, an extremely rare genetic condition in which the body cannot convert androgens to estrogen. Men with this condition have been documented to keep growing into their twenties and beyond, reaching unusually tall stature with delayed bone age and unfused growth plates.17PubMed Central. Aromatase Deficiency When these individuals were given estrogen replacement, their growth plates closed and skeletal maturation progressed normally.18The Journal of Steroid Biochemistry and Molecular Biology. Human models of aromatase deficiency
Most reported cases of aromatase deficiency have been in males, but the condition exists in females too, where it can also affect bone maturation. These cases are medically fascinating because they proved, definitively, that estrogen is the master switch for growth plate closure in both sexes. Before these patients were identified, many researchers assumed testosterone played the primary role in males. The aromatase-deficient individuals demonstrated otherwise.
Height Changes After You Stop Growing
Once your growth plates close, your skeleton is done elongating. But “height” as a measurement is not perfectly stable even in adulthood. On a daily basis, your spine compresses slightly under the load of gravity as you go about your day, then recovers overnight while you sleep. This means you are measurably taller in the morning than in the evening.19PubMed. Circadian variation in human stature The difference can be a centimeter or more, which is worth knowing if you are tracking your height closely or getting measured at different times of day.
Over longer timescales, height is generally stable from the early twenties through about age 40. After that, most people begin to lose height gradually as spinal discs thin and vertebrae may develop compression fractures, especially in postmenopausal women whose bone density has decreased. Data from a British birth cohort found that between the ages of 36 and 69, women lost an average of about 2.4 cm, slightly more than the 2.0 cm lost by men over the same period.1PubMed Central. Human spinal height growth: a description of normal spine growth patterns and adult spine height prediction from a longitudinal cohort This height loss is a normal part of aging, though its pace can be slowed by maintaining bone health through adequate calcium, vitamin D, and weight-bearing exercise.
Why Each Generation Has Been Getting Taller
If you are taller than your grandmother was at the same age, you are part of a well-documented secular trend. Since the 19th century, adult height has been increasing in most European countries at a rate of roughly 10 to 30 millimeters per decade.20Proceedings of the Nutrition Society. Secular trends in growth Alongside this increase in height, the age of menarche has dropped steeply. In Norway, the average age at menarche was almost 16 years in 1840 and had fallen to about 13.5 years by 1940.21Economics & Human Biology. The secular trend in human physical growth: a biological view Both trends are largely attributed to improvements in nutrition, sanitation, and overall health during childhood.
In well-nourished, high-income populations, these trends appear to be leveling off. Menarcheal age has stabilized at roughly 13 years in many countries and may even be edging upward slightly in some.22PubMed. Secular changes in growth and maturation: an update This suggests these populations are approaching their genetic ceiling for height. In lower-income countries where malnutrition and infectious disease remain common, the secular trend is still ongoing, and girls are still reaching taller adult heights than their mothers did, generation over generation. The implication is that “when women stop growing” is not just a biological constant; it is shaped by the environment those women grew up in.