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Calculators / Everyday / Child height estimate
Child height estimate calculator
Estimate adult height from parents’ heights using a simple mid-parent model.
On this page
Estimated adult height179cm
Calculator controls
How to calculate
Estimate adult height from parents’ heights using a simple mid-parent model.
Estimated adult height = (parent1+parent2+adjust)/2
Worked example
Parent 1 height (cm): 180; Parent 2 height (cm): 165; Sex-specific adjustment (cm): 13.
Estimated adult height: 179 cm.
Assumptions and limits
Growth varies widely and the adjustment depends on the chosen convention. This is not a medical prediction.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Estimate adult height from parents’ heights using a simple mid-parent model. The displayed figures use the inputs and formula shown on this page.
When this tool is useful
Use the child height estimate to compare a scenario, check an estimate, or verify a manual calculation.
Understanding your inputs
| Input | What to enter |
|---|---|
| Parent 1 height (cm) | Enter a number of at least 0.000001 and no more than 1000000000000. |
| Parent 2 height (cm) | Enter a number of at least 0.000001 and no more than 1000000000000. |
| Sex-specific adjustment (cm) | Enter a number of at least -30 and no more than 30. |
Frequently asked questions
What should I check before using the child height estimate result?
Growth varies widely and the adjustment depends on the chosen convention. This is not a medical prediction.
Is this child height estimate result exact?
It is exact for the stated mathematical model and entered values. Real-world results can differ when rates, timing, fees, definitions or measurement conditions differ.