Probably about 15 or 16. I was always been taller than most of my classmates until quite late on. I’m 6’3" or so.
Well, the Boobie Fairy got lost on the way to your houses and just kept re-blessing mine, I guess.
At 12, I was 5’3 and a DD-cup. And wow, if I could have maintained that gravity defying bum - whew. I’ve not grown in height since then, but my boobs have gone down a size. And I have to yoga my tummy and bum to sexiness. Hmmm.
I’m the same. Male, 20, and hit 5’10" around 15 or so.
I’ve also heard that.
I’m not holding my breath.
Male here, currently 50 and about 6 feet tall.
I was average height or slightly over until I was about 10, when I quit growing for a couple of years, so I was short (only about 4’6” or so) going into Junior High School.
Between 13 and 15 I shot up (over a foot in one 20 month period) and started 10th grade at about 5’10.
During the next three years of High School I squeaked up another 2” and finished right at about 6’, where I still am, over 30 years later.
So for me, 18 or 19 is where I stopped growing.
I stoped growing when I was 16. To my dismay because I wanted to be taller than all my four brothers and I was half a centimeter shorter than one of them.
And actually I am the tallest. He was lying about his height.
He also cheated when we played games…
I had my major growth spurt right after elementary school- shot up to 5’6" and stopped there.
When I was about 24 I had a second spurt, up to 5’8" in a couple of years. Don’t know what that was all about.
I vaguely remember that formula from when our kids were little. According to her pediatrician’s calculations, our niece was supposed to be 5’9". However, she topped out at 5’4".
I am interested in all the late growth spurt reports.
My older son, 22, was so hopeful of reaching 6 feet, but stopped growing at 5’11 1/2."
Meanwhile, his little brother, 16, is 5’ 10," is eating us out of house and home, and shows no sign of slowing down.
I’m a short-arsed 5’ 6". I stopped growing at 16. As an adolescent it upset me greatly and I used to beg my dad to pay for me to have one of those operations where they break your femur and separate the break, but leave the marrow in place and allow bone regrowth around the marrow. Selfishly he refused… 
Maybe for some women… I didn’t have a growth spurt until after my first. I would have been pissed to be 4’8"!
I thought I stopped growing around 17, which is when the boobie fairy made her final visit too. But I was wrong - sometime during college I grew another 1/2" or so, so I’m closer to 5’4" than the 5’3" I was upon graduating high school.
Corrvin, by that formula (my mom asked my pediatrician when I was 11 or so) I was supposed to be less than five feet tall. I don’t think it works very well.
I’m 5’10’’, and I reached that height at (roughtly) the age of 18.
I know I’ve been 6’2" since I was 16 but I might have stopped growing before then.
I’m 20 and female. I still have some clothes and shoes from when I was in 8th grade. I think I quit growing between 13 and 14 - almost 5’2".
The boobie fairy missed and hit my ass instead.
I stopped growing at 13 at 5’2". When I was 22 I grew another 2" and it was all in my legs.
I’m a guy. I finished seventh grade at 4’9" and came back for eighth at 5’3". That summer sucked. I kept bonking my head, shouldering into doorways, whacking my fingers on the wall, stubbing my toes, because everything kept changing length. I have slight stretch marks around my hips from the sudden growth. I had another small growth spurt at about 15 to 5’7" and then gradually grew about another two inches by the end of high school. I added another inch somewhere along the way, so I’m a shade under 5’10" (178 cm as of my last physical).
When I was packing stuff to move away to finish university at 23, I discovered that sometime in the previous year or so, I’d filled out without noticing it much. Clothes that I’d been able to wear before were way too small. My waist size had gone up an inch, some of my button-up shirts couldn’t be buttoned because my shoulders were too wide, the sleeves were too short on my long-sleeved shirts, and the thighs of my old jeans were so small I could only pull them halfway on. I had to throw out a bunch of stuff I’d been able to wear since I was 15 or 16.
Since I hadn’t gotten much fatter (I could only pinch about 1/2" to 1" of fat on my stomach) I just shrugged and got on with things. It took me a couple of years to change my self-image from that of a slightly short, slender-but-wiry guy to match my new body. I hadn’t weighed myself for years, but I was up about 15-20 pounds over my graduation weight at that point. My dad must have gone through the same thing, because his shoulders are close to my present width, but his army jacket that he had at around age 21 fit me almost perfectly when I was in high school. It would be hopelessly small for me now.
5’5" since 6th grade.
In September, I was still the second skinniest girl in my class (and Skinniest got diagnosed with a bad eating problem years later, I guess today she would have been anorexic; she never developed properly). In October I started getting all these curves, out of nowhere. In mid-January I “became a woman”. One day in April I was standing beside Mom and she said “take off your shoes!” and uh, oh, I was one centimeter taller than she! She told me to “stop growing right now” and claims it’s the only time I’ve obeyed her in my whole life.
I had the same sizes for about 20 years, too. Apparently turning 32 did something yucky to my fat-a-bolism 
(happened to Mom too, who invited Genetics to this party, I’d like to know)