About

Child Growth Lab is a free, English-language website of pediatric growth reference calculators for the United States market. It is an SEO-oriented educational tool site—not a SaaS product, not a clinic, and not a substitute for professional care.

Design principles: no login, no payment system, no database of child measurements, no external calculation APIs. Computations use local versioned data files and run in your browser when you submit a form.

We publish sources, formula versions, age limits, and limitations on each tool page and on the Methodology page.

Contact: support@childgrowthlab.com