Mid-Parental Height Calculator

Use this Mid-Parental Height Calculator to estimate a child’s genetic target adult height based on the biological mother’s and father’s heights. The result is a helpful reference point, not a promise of final height.

Mid-Parental Height Calculator

Estimate a child’s genetic target adult height

Child Sex:
Units:
Parent Heights
ft
in
ft
in
cm
cm
Estimated Adult Height
--
--
Likely Genetic Range
--
About ±4 inches / ±10 cm
Lower range
Target
Upper range
Important: This calculator is for educational use only. Mid-parental height is a genetic estimate, not a diagnosis or promise of final adult height.

How This Calculator Works

1

Choose child sex

The formula adjusts differently for boys and girls.

2

Enter parent heights

Use feet/inches or centimeters. The tool converts values internally.

Mid-Parental Height Formula

Boy

(Father + Mother + 5 inches) / 2

Girl

(Father + Mother - 5 inches) / 2

Related Growth Calculators

Use these companion tools to understand a child’s growth from different angles:

Ethan builds the interactive health calculators on Height Growth Blog. Based in Denver, Colorado, he combines a software engineering background with a focus on evidence-based health tech, turning dense clinical guidelines — from CDC growth charts to NIH/IOM dietary references — into tools parents and teens can use in under a minute. Every calculator on the site, from BMI Percentile to Body Fat and Calcium Intake, is built directly from primary sources (NIH, AAP, CDC, Mayo Clinic) and cross-checked against peer-reviewed studies before launch.

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