About Child Growth Lab

Child Growth Lab is independently created, operated, and maintained by an individual developer. “Child Growth Lab” is the public publisher name used by this website. The developer is responsible for source selection, product scope, code changes, testing, public content, release decisions, and corrections.

The public support channels are support@childgrowthlab.com and the Contact page. Child Growth Lab is not a hospital, clinic, government agency, university, or professional medical society. It does not present a fictional physician team, editorial board, or larger organization.

The site turns publicly available, verifiable child-growth reference standards and documented calculation methods into transparent browser tools. Users can inspect input requirements, formula versions, data sources, applicable scope, and limitations instead of receiving an unexplained number or label.

Its guides explain percentiles, BMI, growth velocity, corrected age, and family-height context. The goal is to reduce black-box calculation, vague labeling, and the risk of mistaking a screening result for a diagnosis, while helping parents and caregivers prepare better-informed questions for an appropriate professional. The site does not replace clinical assessment.

Parents and caregivers are the primary audience. Healthcare professionals and other adults may also use the calculators as transparent reference tools. The site is not directed to children, is not a clinic, and does not create a clinician–patient relationship.

Child Growth Lab currently publishes 8 free calculators and 8 educational guides. The calculators complete specific reference or arithmetic tasks. The guides explain what results mean, the supporting evidence and limitations, and common ways those results can be misused. Choose a calculator from the homepage.

Methodology records data, formulas, implementation, and validation methods. Editorial Review describes internal review and correction practices. About and Contact identify the publisher and support route; Privacy, Terms, and the Medical Disclaimer state privacy, use, and responsibility boundaries. These pages serve different user tasks; they are not bulk variations created to target the same search intent.

Child Growth Lab is built with accuracy, transparency, and reproducibility as core priorities. Medical explanations and calculator methods are based on applicable official guidance, original datasets, professional-organization materials, technical documentation, and primary research. Government agencies, official data publishers, professional medical organizations, original papers, and technical documentation are preferred; ordinary blogs, commercial calculators, and search summaries do not replace primary evidence.

Before publication, review covers the applicable population, age range, formula, units, date rules, thresholds, boundaries, rounding, data source, result interpretation, and situations where a method does not apply. Depending on the page, tests may include official or independently reproduced validation vectors, numerical regression, input and birthday boundaries, unit conversion, rounding, responsive layouts, keyboard use, accessibility, browser errors, and Production release checks.

These processes are designed to reduce errors, but no website can guarantee that every result or explanation is error-free or suitable for every individual clinical situation.

AI-assisted tools may help organize research, prepare drafts, write code, generate tests, inspect code differences, and assist review. AI output is not published automatically. AI is not a medical evidence source, doctor, clinical reviewer, publisher, or final decision-maker.

The individual developer remains responsible for checking sources, confirming formulas, reviewing code and implementation differences, checking public wording, and deciding whether a change is published or withdrawn.

Calculations run in the browser. There is no user account, child health database, long-term measurement profile, or external calculation API, and the site does not build a stored medical record from calculator entries.

Browser-based calculation does not mean the website makes no ordinary network requests. Hosting, DNS, security protection, and related infrastructure may create routine technical logs. The Privacy Policy defines the current collection and infrastructure boundary.

The calculators and guides are free to use and do not require an account. Child Growth Lab may use advertising to help cover hosting, development, source and data verification, testing, and continuing maintenance costs.

Advertising does not determine formulas, evidence sources, result categories, medical boundaries, page conclusions, or the order in which tools and guides are presented. Advertising must remain distinguishable from primary content, and an advertiser, source institution, or professional organization is not described as endorsing the site merely because its advertisement or source material appears here. The site does not sell individualized diagnoses, medical reports, treatment advice, or child health records.

Report a content issue, source error, calculation concern, privacy or accessibility problem, broken link, or technical issue to support@childgrowthlab.com or through the Contact page.

A confirmed issue is checked against the relevant source and implementation. When appropriate, a regression test is added or updated, release validation is rerun, and the affected page receives a truthful review-date update. The support address is not an emergency medical channel and does not provide individualized medical judgment. Do not email a child’s complete medical record, identity documents, or other sensitive health records.