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Calculator · Age 12

How tall will I be at 12?

Your height
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Mother's height
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Father's height
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Your result

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Shown as a 90% range: the adult height lands inside it 9 times out of 10. Heights and weight are never sent anywhere.

Short answer

At 12, the average boy is 4′10½″ and has reached about 84% of adult height; the average girl is 4′11½″ and has reached about 93%. That typically leaves about 28 cm (10.9 in) for boys and 12 cm (4.8 in) for girls, but timing varies by two years either way. Enter your numbers above for your own adult height range.

Reviewed · 4 sources · Not medical advice

Typical height and growth left at 12

Average heightAdult height reachedTypical growth left
Boys4′10½″ · 149 cm84%28 cm · 10.9 in
Girls4′11½″ · 151 cm93%12 cm · 4.8 in

Averages from CDC growth charts at exactly 12 years, compared with the chart's adult height at 20.

Boys at 12

Puberty is starting for many boys, but most haven't hit their growth spurt yet. Big differences between classmates are normal.

Girls at 12

Many girls are at or just past their fastest growth, and first periods often start around now.

Why an average isn't your answer

Two 12-year-olds of the same height can end up at very different adult heights, because one has done most of their growing and the other hasn't started. Your parents' heights and your current weight tell the calculator which one you are likely to be, so your range is far tighter than any average. Check signs you're still growing too.

Questions people ask

Can I still grow at 12?

Almost certainly. At 12 an average boy still has about 28 cm left and an average girl about 12 cm. Measured height that hasn't changed in 6 to 12 months is the sign you're close to done.

How much will I grow after 12?

Averages: boys about 28 cm (10.9 in), girls about 12 cm (4.8 in). Late developers grow more after 12, early developers less.

Is 5′0½″ tall for 12?

For a boy it is about the 75th percentile at 12. For a girl the 75th percentile is 5′1½″.

Sources

  1. CDC. Growth charts (2000 stature-for-age, ages 2 to 20)
  2. Khamis HJ, Roche AF. Predicting adult stature without using skeletal age: the Khamis-Roche method. Pediatrics 1994;94(4):504–507 (erratum 1995;95:457)
  3. Nemours KidsHealth. Growth and your 13- to 18-year-old
  4. Hospital for Special Surgery. Is it possible to predict a child's adult height?

Your exact number and a daily plan

TallPath runs the same prediction from a 2-minute quiz, shows where you'll likely land inside the range, and builds a daily sleep, food and posture plan around it.

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