How Tall Will
You Really Get?
Get your scientifically-predicted adult height in 10 minutes. Our 62-point analysis uses methods trusted by pediatric endocrinologists.
Powered by Clinical Methods
3 Simple Steps
Get your scientifically-predicted adult height in just 10 minutes
Answer 62 Questions
Take our comprehensive test covering genetics, body measurements, lifestyle, and more.
Free to startAI Analyzes Your Data
Our algorithm combines Khamis-Roche, Bayley-Pinneau, and WHO standards.
62 data pointsGet Your Report
Receive your predicted adult height, growth timeline, and recommendations.
Instant resultsWhy TallMax is Different
We don't guess. We use proven scientific methods and comprehensive data analysis.
Genetic Analysis
Based on the Khamis-Roche method utilizing parental height data to predict genetic height potential.
Anthropometric Ratios
We analyze sitting height, arm span, and leg length ratios used in clinical growth studies.
Tanner-Whitehouse Model
Our algorithm incorporates growth prediction models used by pediatric endocrinologists worldwide.
Lifestyle Factors
Sleep, nutrition, and exercise data are factored using WHO growth velocity standards.
Population Standards
Results are compared against CDC growth charts and population-specific percentile data.
Precision Prediction
Multiple models combined provide height predictions with up to 95% accuracy rate.
Backed by Decades of Research
TallMax combines multiple validated growth prediction methods that have been used in clinical settings for over 40 years.
Khamis-Roche Method
A validated equation using current height, weight, and parental heights to predict adult stature without requiring bone age assessment.
Tanner-Whitehouse Model
The gold standard in pediatric endocrinology, utilizing skeletal maturity and growth velocity patterns for precise height prediction.
WHO Growth Standards
International growth reference data from the World Health Organization, providing population-specific percentile comparisons.
Based on data from Journal of Clinical Endocrinology & Metabolism
What others are saying
"Predicted 6'1" and I'm already on track! The shoe size analysis was spot on."
Alex M.
Age 16
"Finally know I'll reach 5'7" - taller than my mom! The report explained everything."
Sarah K.
Age 14
"Worth every penny. The growth velocity section showed I still have 2 inches left."
James L.
Age 17
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