Adult height sketch
The mid-parent formula, measured in either unit.
What it does
The Adult height sketch estimates a child's adult height with the classic mid-parent formula: adjust one parent's height by 13 cm (5 in) — added for a boy, subtracted for a girl — then average the parents. Heights go in as centimeters or inches (the placeholders suggest 165 and 180). Entertainment only: a sketch, not a growth forecast and not medical advice.
Who it’s for
Anyone who has ever looked at two parents and done mental math about basketball potential.
How to use it, step by step
- Choose units: centimeters or inches.
- Enter the mother's height and the father's height.
- Tap Estimate for the approximate adult height.
- Copy, share, or print the estimate.
What you get
An approximate adult height from the mid-parent formula.
✦ A worked example
You give itMother 165 cm, father 180 cm.
You getA boy estimate around the high-170s and a girl estimate around the mid-160s, by the classic formula — kitchen-table math, done properly.
💡 Tips & tricks
- Nutrition, health, and plain genetic lottery move real heights well off any formula — treat the number as a conversation, not a target.
- The formula's 13 cm adjustment mirrors the average adult height gap between men and women; now you know the trick behind the sketch.
Enough reading — the tool itself is one tap away, and it is free.
Try the Adult height sketch →