About Us: The Science Behind Child Growth Prediction
Discover the science behind our medical-grade height prediction tools and our mission to help families understand child growth with scientifically accurate, easy-to-use calculators.
Our Mission: Making Medical Science Accessible
Every parent has wondered: "How tall will my child be?" While no tool can predict the future with absolute certainty, we believe families deserve access to the same scientifically accurate methods that pediatric endocrinologists use in clinical practice.
Height Calculator was created to bridge the gap between complex medical research and practical family needs. Our tools are based on peer-reviewed studies and validated clinical methods, presented in a format that anyone can understand and use.
Our Tools: Three Approaches to Height Prediction
We offer three complementary calculators, each designed for different needs and stages of child development:
Height Calculator
Our flagship tool uses the Khamis-Roche method, combining current height, weight, and parental genetics for the most accurate prediction available without X-rays.
Best for: Ages 4-17
Accuracy: ±1.5 inches (90% of cases)
Percentile Calculator
Compare your child's current height and weight to CDC and WHO growth standards. See exactly where they stand compared to peers.
Best for: All ages (0-20 years)
Standards: WHO (0-24 months), CDC (2-20 years)
Mid-Parental Calculator
Calculate genetic height potential using only parental heights. Based on the Tanner method used by pediatricians worldwide.
Best for: Genetic baseline estimation
Method: Tanner formula with ±2 inch range
The Scientific Foundation
Our calculators are built on decades of pediatric growth research and validated clinical methods:
The Khamis-Roche Method (1994)
Published in the journal Pediatrics, this method was developed by Dr. Harry Khamis and Dr. Alex Roche using data from the Fels Longitudinal Study - one of the longest-running studies of human growth and development.
Key Innovation: The first method to achieve high accuracy (±1.5 inches for 90% of children) without requiring bone age X-rays, making it practical for widespread use.
CDC & WHO Growth Standards
Our percentile calculations use the official growth charts from the Centers for Disease Control and Prevention (CDC) and World Health Organization (WHO).
Data Source: Based on measurements from hundreds of thousands of children, representing the gold standard for growth assessment in clinical practice.
Tanner Mid-Parental Height Method
Developed by Professor James Tanner, a pioneer in human growth research. This method accounts for sexual dimorphism (biological height differences between males and females).
Clinical Use: Widely used by pediatric endocrinologists as a baseline for identifying potential growth disorders.
Our Commitment to Accuracy
We understand that families rely on our tools for important decisions about their children's health and development. That's why accuracy is our top priority:
- Peer-Reviewed Methods: We only implement calculation methods that have been published in reputable medical journals and validated through clinical studies.
- Regular Updates: Our algorithms are regularly reviewed and updated to reflect the latest research in pediatric growth and development.
- Transparent Limitations: We clearly communicate the limitations of each method and provide appropriate disclaimers about accuracy ranges.
- Algorithmic Validation: Our calculators utilize strict implementation of the Khamis-Roche and Tanner equations. We verify our output against standard CDC datasets to ensure statistical precision matches published clinical studies.
Who We Serve
Our tools are designed for multiple audiences, each with different needs and levels of medical knowledge:
Parents & Families
Curious parents who want to understand their child's growth trajectory and make informed decisions about nutrition, sports, and development.
- • Track growth progress over time
- • Understand percentile meanings
- • Plan for future needs (clothing, sports equipment)
- • Identify when to consult a pediatrician
Healthcare Professionals
Pediatricians, nurses, and other healthcare providers who need quick, reliable growth predictions for patient consultations.
- • Quick clinical assessments
- • Patient education tools
- • Growth disorder screening
- • Treatment planning support
Educators & Researchers
Teachers, coaches, and researchers who work with children and need to understand growth patterns and development.
- • Educational demonstrations
- • Research data collection
- • Sports team planning
- • Developmental assessments
Students & Learners
Medical students, nursing students, and anyone learning about human growth and development.
- • Interactive learning tools
- • Real-world applications
- • Method comparisons
- • Clinical practice preparation
Privacy & Security
We take your family's privacy seriously. Our commitment to data protection includes:
Your Data, Your Control
- No Data Storage: We don't store any personal information or calculation results on our servers.
- Local Processing: All calculations happen in your browser - your data never leaves your device.
- No Registration Required: Use our tools without creating accounts or providing personal information.
- Secure Sharing: When you share results, only the calculation parameters are included in the URL - no personal identifiers.
- No Tracking: We don't use invasive analytics or tracking cookies to monitor your usage.
Medical Disclaimer & Limitations
While our tools are based on validated medical research, it's important to understand their limitations:
Important Medical Disclaimer
Educational Purpose Only: Our calculators are designed for educational and informational purposes. They are not intended to replace professional medical advice, diagnosis, or treatment.
Consult Healthcare Providers: Always consult with qualified healthcare professionals for medical concerns about your child's growth and development.
Individual Variation: Every child is unique. Predictions are statistical estimates based on population data and may not reflect individual circumstances.
Medical Conditions: Our tools cannot account for underlying medical conditions, hormonal disorders, or other factors that may affect growth.
When to Consult a Pediatrician
Consider consulting a healthcare professional if:
- Your child's growth percentile drops significantly over time
- Your child is consistently below the 3rd percentile or above the 97th percentile
- There's a significant discrepancy between predicted and actual growth
- You have concerns about delayed or early puberty
- Your child has symptoms of growth disorders or hormonal imbalances
Contact & Editorial Standards
We are a team of data enthusiasts and developers passionate about child health metrics. We are committed to maintaining the quality of this tool.
Report a Bug: If you notice a calculation error or a technical issue, please let us know Contact Us.
Suggestions: Have an idea for a new feature? We'd love to hear from you.
Last Updated: January 1, 2026