Child Height Predictor
Predicted adult height from parent heights.
Reviewed by James Whitfield · How we check our maths
Your values
ⓘ Live results
Results
- Predicted adult height
- 69.5 in (176.5 cm)
- Likely range
- 65.5–73.5 in
- In feet
- 5′ 10″
- Mid-parental height
- 67 in
Quick answer
Mid-parental height predicts adult height within about 4 inches for most children.
The formula
Boys = (mother + father + 5in) ÷ 2
Worked example
Worked example
Using the values the calculator loads with.
Inputs
- Mother's height64 in
- Father's height70 in
- ChildBoy
Result
- Predicted adult height69.5 in (176.5 cm)
- Likely range65.5–73.5 in
- In feet5′ 10″
- Mid-parental height67 in
How to use the Child Height Predictor
- 1Enter both parents' heights.
- 2Select the child's sex.
- 3Read the prediction and its range.
Frequently asked questions
How accurate is this?
About ±4 inches — nutrition and puberty timing shift results.
Does it work for adopted children?
No — it depends on biological parents' heights.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error