HeightPredictorHeight predictor quiz · 2 minutes
How tall will you be?
Eight quick questions. Your adult height, an honest range, and how much of it is still in your hands. If you have ever typed "how tall will I be" into a search box, this is the two-minute answer: a height predictor built on the growth references clinicians use, free, no card.
What you get at the end
How the prediction works
Mid-parental target plus a growth-curve projection against WHO and CDC references, the method clinicians use for a height predictor based on parents. Your sleep, activity and food answers size the part that is not genetic.
The result is a future height with a range, not a promise. An adult height predictor that gives you one exact number is hiding its uncertainty; we show the range and your final height inside it.
Height predictor for teens: are you still growing?
Most girls finish growing around 15 to 16 and most boys around 17 to 18, when the growth plates close. Before that, the question "will I grow taller?" usually has a yes in it. After that, standing taller is about posture, not bone.
So can you grow taller after 18? A little, if your plates have not closed yet, which is why the quiz asks your age and height today rather than guessing. "Am I still growing?" is exactly the question the growth curve answers.
People also ask
How accurate is a height predictor?
Good ones land within about 2 inches (5 cm) of adult height for most teens, and they get tighter as you get older. Anything sold as a 100 percent accurate height predictor is not being honest: growth has real variance, which is why we show a range.
Can I still grow after 16?
Often, yes. Many boys grow into 17 or 18, and some girls add a little after 16. It depends on whether your growth plates are still open, which tracks with how far you are past puberty, not the calendar alone.
Can you grow taller after 18?
Usually only a small amount, and only if the growth plates are still open. Most people are within an inch of their final height by 18. What you can still change at any age is posture, which is worth up to about half an inch of standing height.
What if I don't know my parents' height?
Enter your best guess. The prediction leans on your own height and age more than on your parents, so a rough parent height widens the range a little without breaking the result.
How tall will I be at 13, 14 or 15?
These are the years with the widest range, because the growth spurt lands at different ages. The quiz uses your current height against the curve for your age and sex, so a late bloomer at 13 and an early one at 15 get different, honest ranges.
How tall will I be at 16, 17 or 18?
By now the range is narrow. Girls are usually at or near final height; boys may add an inch or two by 18. The result tells you how much of the remaining growth is still open.
Does shoe size predict height?
No. Shoe size and height are loosely related in adults, but a height predictor with shoe size cannot tell you how much you will still grow. Age, current height, sex and parent heights do.