Parenting & Baby · Free tool

Child Adult Height Prediction

Mid-parental height formula with ±4 inch range. Growth curve projection too.

Updated April 2026

Child’s sexChild’s age (years)Child’s current height (in)Father height (in)Mother height (in)

Predicted adult height (mid-parental)

5’ 9.5”

95% range: 5’ 5.5” – 6’ 1.5”

Growth-curve projection

6’ 0.0”

Based on current height and age percentile.

Blended estimate

5’ 10.8”

Average of mid-parental and growth-curve.

Genetics is ~80% of final adult height. Nutrition, sleep, and overall health account for the rest. Estimates are probabilistic — individual growth varies.

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What it does

Mid-parental formula predicts adult height within ±4 inches for 95% of kids. Genetics is 80%. The rest is sleep, nutrition, and health.

Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.

Embed this tool on your siteShow snippet

Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.

<iframe src="https://freetoolarena.com/embed/child-height-prediction" width="100%" height="720" frameborder="0" loading="lazy" title="Child Adult Height Prediction" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>

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How to use it

Enter parents’ heights.
Enter child age + current height.
Read predicted adult height.