Smarter than a simple formula
We start with a parent-based baseline (similar to the mid-parental approach), then refine it using a percentile-adjusted model that factors in your child’s current growth percentile and age. You can input ages up to 20 years for late-teen updates.
Combine mother and father heights to set an initial expectation.
Apply a growth-percentile weighting for a more individualized forecast.
Show an expected +/- range to reflect normal variation.
- 1
Baseline: parent-based estimate derived from maternal and paternal heights.
- 2
Adjustment: weighting by your child’s current growth percentile and age.
- 3
Range: we display ±10 cm (±4 in) as a typical variability window.
Genetics, nutrition, health, and puberty timing all play roles in adult height. Use this as guidance, not a medical determination.
- Providing the child’s current height & age
- Updating periodically as your child grows
- Using consistent measurement units
- Individual growth patterns vary
- Health and environment influence outcomes
- Model provides an estimate, not a guarantee
Do you use the mid-parental method?▾
We use a parent-based baseline (akin to mid-parental height) and enhance it with a percentile-adjusted model that accounts for current growth—more personalized than a simple formula alone.
What ages are supported?▾
You can enter a child’s age and current height up to 20 years, which is broader than many alternatives and helpful for late-teen growth tracking.