Parent growth-chart library
Child Growth Blog
Source-based guides for choosing a growth reference and understanding what a measurement can—and cannot—tell you. Start with the question you have, then move to a calculator only when you have the required measurements.
- ✓ Independent educational content, not diagnosis
- ✓ Official CDC, WHO, and professional sources
- ✓ Clear handoffs to the existing calculators
- ✓ No child profiles, tracking, or saved measurements
Start with the decision you need to make
If you are unsure whether a U.S. growth record belongs on a WHO or CDC chart, begin with the age-2 transition guide. If you already know the chart, choose the guide for the measurement or concept you want to understand.
Compare CDC and WHO growth charts before entering a measurement.
Choosing a growth chart
CDC vs WHO Growth Charts: Which One Should You Use?
Understand the U.S. transition from WHO standards to CDC references at age 2 and choose the appropriate calculator.
How to Read a CDC Growth Chart
Follow chart axes and percentile curves without treating one plotted point as a diagnosis or trend.
Infant growth
What Do Baby Growth Percentiles Mean?
Compare what WHO weight-, length-, weight-for-length-, and head-circumference-for-age indicators answer.
What Is Corrected Age for Premature Babies?
Understand corrected age, chronological age, and why the purpose and clinical context matter.
Interpreting measurements
What Does a Child’s BMI Percentile Mean?
Learn how BMI-for-age screening categories work and what a percentile cannot diagnose.
What Is Growth Velocity in Children?
Learn how change between two dated measurements differs from a growth-chart percentile.
What Is Mid-Parental Height?
Use family-height context without treating a rough estimate as a prediction or target.
How this library is maintained
Child Growth Lab maintains these pages through an evidence, implementation, testing, and release-review process. Medical statements are tied to primary official or professional sources, and each page has a distinct user task rather than a keyword variation of another page.
No named clinician has completed a site-wide clinical review. See the Editorial Review and Methodology pages for the current scope, sources, testing, and limitations.