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Calculator · Age 13

How tall will I be at 13?

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 13, the average boy is 5′1½″ and has reached about 88% of adult height; the average girl is 5′2″ and has reached about 96%. That typically leaves about 21 cm (8.2 in) for boys and 6 cm (2.4 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 13

Average heightAdult height reachedTypical growth left
Boys5′1½″ · 156 cm88%21 cm · 8.2 in
Girls5′2″ · 157 cm96%6 cm · 2.4 in

Averages from CDC growth charts at exactly 13 years, compared with the chart's adult height at 20.

Boys at 13

These are the peak growth years for many boys, often 7 to 10 cm (3 to 4 in) in the fastest year. Early and late developers can look very different.

Girls at 13

Growth is slowing for most girls after their first period.

Why an average isn't your answer

Two 13-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 13?

Almost certainly. At 13 an average boy still has about 21 cm left and an average girl about 6 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 13?

Averages: boys about 21 cm (8.2 in), girls about 6 cm (2.4 in). Late developers grow more after 13, early developers less.

Is 5′3½″ tall for 13?

For a boy it is about the 75th percentile at 13. For a girl the 75th percentile is 5′3½″.

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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