16 and 17 are the ages when most people start wondering whether their height is set for life. The honest answer is: it depends — and the answer varies significantly by sex, pubertal stage, and individual maturation timing. Here is exactly what the science says.
The Short Answer: It Depends on Where You Are in Puberty
Age is a poor proxy for growth potential at 16–17. The more accurate question is: where are you in your pubertal timeline? Two 17-year-old boys can have radically different amounts of remaining growth — one who began puberty early at 11 may be essentially finished, while one who began late at 14 may still have 3–5 cm remaining.
Growth Potential by Sex at Ages 16–17
Why boys have more remaining growth than girls at the same age: Boys enter puberty approximately 1.5–2 years later than girls on average, and their growth plates fuse approximately 2 years later. A 16-year-old boy is at roughly the same pubertal timeline as a 14-year-old girl — meaning the amount of remaining growth is similar when corrected for this offset. This is also why adult men average 13 cm taller than adult women despite similar childhood heights — boys simply grow for longer.
How to Know If You Are Still Growing
These signals — both clinical and observable — help assess whether meaningful growth is still occurring without a bone age X-ray.
The only definitive answer: bone age X-ray. A hand-wrist X-ray interpreted by a radiologist against the Greulich-Pyle atlas gives a direct answer within a year of accuracy. Open growth plates = growth remaining. Fused plates = growth complete. No amount of self-assessment replaces this. It costs approximately $50–150 in most countries and can be requested through a pediatrician. If you are genuinely uncertain about your growth status, this is the most useful $100 you can spend.
What to Do If You Are Still Growing at 16–17
If growth plates are still open — confirmed by bone age or inferred from the signs above — the same principles that apply during peak puberty still apply, just with diminishing returns as the window closes. Every remaining month of growth deserves optimization.
If Growth Is Essentially Complete: What Now
If you are 16–17 and genuinely at or near your final height — based on bone age, family history, or simply no measurable change in 12+ months — the focus shifts from height growth to two more relevant goals: maximizing your standing height through posture, and consolidating peak bone density for lifelong health.
The posture opportunity: Many adults and older teens stand 1–3 cm shorter than their actual skeletal height because of postural faults — forward head, rounded shoulders, compressed lumbar spine — that developed during years of screen use and desk sitting. These are fixable at any age. Correcting posture does not add new bone length; it reveals the height that was always there. A 17-year-old who adds 2 cm through posture correction has not grown — they have simply stopped hiding their full height.
Posture Corrections That Recover Hidden Height
Myths About Growing at 16–17
You stop growing at 16.
Most boys still have 1–5 cm of remaining growth at 16. Late-maturing boys may have more. Growth stops when growth plates fuse — which happens at different ages for different individuals, commonly between 17–21 in boys.
If you haven't grown in 6 months, you're done.
Growth velocity in the deceleration phase can drop to 1–2 cm/year — which is only 0.5–1 mm per month. This is invisible without precise measurement. Six months of apparent non-growth can simply mean very slow growth that a door-frame mark won't capture.
Supplements can reopen fused growth plates.
No supplement, exercise, or intervention can reopen growth plates once fused. Growth plate fusion is an irreversible biological process driven by sex hormones. Any product claiming to "reopen growth plates" in adults or older teens is making a scientifically impossible claim.
Tall parents guarantee you'll be tall at 16.
Tall parents increase the probability of tall adult height, but timing matters. A teen with tall parents who is a late maturer may still appear short at 16 relative to peers — only to catch up at 18–20. Current height at 16 does not equal final height for late-maturing individuals.
References
Frequently Asked Questions
It depends entirely on your pubertal timeline, bone age, and family genetics — not your current height alone. If you are a late-maturing boy who has only recently finished the main phase of your growth spurt, you may have 3–5 cm remaining. If you began puberty early and your growth has been decelerating for 2+ years, you are likely within 1–2 cm of your final height. The honest way to get a meaningful answer is a bone age X-ray and a calculation of predicted adult height based on your current height and bone age — this will give you a realistic range rather than speculation.
Constitutional growth delay — late-maturing growth patterns — runs strongly in families. If your father grew until 19–20, there is a meaningful probability you have inherited the same late-maturation timeline. Boys with constitutional growth delay typically have bone ages 1–3 years behind their chronological age, meaning their skeletal maturation timeline is shifted later. At 16 or 17, a constitutional late bloomer may genuinely have 4–6 cm of remaining growth that an average-timing teen would not. A bone age X-ray confirming your skeletal age is 1.5–2+ years younger than your chronological age would strongly support this interpretation.
Possibly, but unlikely by more than 0.5–1 cm for most girls at 17. Girls' growth plates typically fuse by 15–17, meaning most girls are at or very close to their final height by 17. The exception is late-maturing girls — those who began puberty at 13–14 rather than 10–11 — who may still have 1–2 cm remaining at 17. If you had your first period less than 2 years ago and have a family history of late maturation, a small amount of growth is still possible. For most 17-year-old girls, posture correction is the more productive focus than height growth strategies.
