- Mid-parental estimate
- 179 cm
How it works
Decimal feet are not feet-and-inches
A height written as 5.8 feet means 5 feet 9.6 inches, not 5 feet 8 inches. Enter whole feet and remaining inches separately; confusing the formats introduces a measurement error before any conversion or parental-height estimate begins.
Understanding a parental-height estimate
The height estimate uses the supported mid-parental method and entered parent measurements. Check units carefully when combining heights recorded in different systems. The output is a broad model-based estimate, not a prediction of an individual child's final height or a growth assessment. The separate unit-conversion modes only change how a known height is expressed.
Mid-parental estimate: formula and assumptions
Boy: (mother+father+13 cm)/2. Girl: (mother+father−13 cm)/2.
This simple family-based estimate is not a growth assessment. Actual height depends on genetics, health, nutrition, and development.
Height unit converter: formula and assumptions
Centimeters = (12 × feet + inches) × 2.54.
Enter whole feet and additional inches below twelve. Conversion output carries a rounded twelve inches into the next foot.
Parents with selected units: formula and assumptions
Mid-parental estimate = (mother cm + father cm ± 13 cm)/2.
Convert measurements before using the family-based formula. The coefficient remains 13 cm in both unit systems. This is a broad reference, not an individual growth prediction.
Worked example
Using the Mid-parental estimate example:
- Mother's height (cm)
- 165
- Father's height (cm)
- 180
- Child's sex used by equation
- Male
Boy: (mother+father+13 cm)/2. Girl: (mother+father−13 cm)/2.
Example result
Mid-parental estimate: 179 cm
These are illustrative inputs. Change the values to explore a different scenario.
Formula references
References explain the underlying methods; they do not imply endorsement or individual professional review of Finflo.
Common questions
What does the parent-based height estimate show?
It gives a broad family-based reference from the parents' heights. It does not use the child's current measurements or assess growth.
Does choosing feet and inches change the prediction formula?
No. Parent measurements are converted before applying the same 13 cm sex coefficient. The result remains a broad reference, not a growth assessment.
Prepared by Finflo. See our methodology and editorial policy.