TallSoonFree calculatorFree height prediction
Free height predictor
Enter a few measurements to see which methods apply. Your entries stay in this browser and are not sent to TallSoon.
Free height prediction
Estimate adult height
Enter a few measurements to see which methods apply. Your entries stay in this browser and are not sent to TallSoon.
Estimated adult height
Likely range:
Methods available for these details
This is an estimate, not a diagnosis or a promise of final height. Talk with a pediatrician if you have concerns about growth.
Frequently asked questions
Is the height predictor free?
Yes. The estimate is free and appears before any optional app subscription.
Do you send my child’s details anywhere?
No. The calculator runs in your browser and does not send measurements or birth details to TallSoon.
Does weight have to be entered?
No. Weight is optional. It enables Khamis–Roche when the child is within that method’s age range; available family-height and percentile methods can still be shown without weight.
How accurate is the estimate?
No method can guarantee an individual child’s adult height. The methods page explains published ranges and the limits of each approach.