How tall might they grow?

Find out how tall a child may be as an adult from the parents’ heights. Pick a method, enter the numbers, and get a clear estimate — private, free, and no signup.

Predict adult height

Tanner is the corrected mid-parental height method many Western pediatric clinics use.

Predicted adult height
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Likely range
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Method
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This is an estimate, not a medical diagnosis or growth assessment. Nutrition, health, and the timing of puberty can change the outcome — talk with a clinician if you have concerns about a child’s growth.

What you get

Enter the child’s sex and both parents’ heights. No account needed.

Tanner method

The corrected mid-parental height many Western clinics use, with a ±8.5 cm range.

Adjusted (FPH)

A formula that nudges the prediction toward the average — useful when both parents are quite tall or short.

Metric or imperial

Work in cm or ft/in. The math stays in centimeters under the hood.

A quick note on the math

These formulas only use the parents’ heights and the child’s sex. They do not use the child’s current height, weight, or age (methods like Khamis–Roche need those). Treat the number as a ballpark, not a promise.