以 WHO 標準為基礎的身高、體重與 BMI 百分位曲線。為家長與兒科醫師設計，免費開始。
Features
Clinical-grade tools made simple for everyday use — no medical degree required.
Weight-for-age and height-for-age charts plotted against WHO standard deviation bands — the same charts paediatricians use.
Our LMS-based calculation engine computes exact z-scores and percentile ranks for every measurement, automatically.
Linear regression predictions estimate future height and weight trends based on your child's unique growth trajectory.
Generate professional PDF reports with full chart history and statistics — perfect for paediatrician visits.
Automatic email alerts when your child's measurements fall outside normal WHO ranges — catch concerns early.
Your child's data is encrypted, stored securely, and never sold. Full GDPR data export and deletion rights.
How it works
Add your child's weight and height. GrowChart instantly plots them on WHO standard charts, calculates z-scores, and flags any concerns.
Pricing
Start free. Upgrade when you need PDF reports, multi-child tracking, and advanced predictions.
FAQ
We use the official WHO Child Growth Standards (2006) and the WHO Growth Reference (2007) for children aged 0–19 years. The same charts used by paediatricians globally.
Yes. GrowChart is self-hosted — your data never passes through third-party analytics platforms. We are fully GDPR compliant and you can export or delete your data at any time.
A z-score (or standard deviation score) tells you how far your child's measurement is from the WHO median for their age and sex. A z-score between -2 and +2 is considered normal.
Free accounts support 1 child. Premium accounts support up to 5 children, and Clinic Pro supports unlimited patient profiles.
Yes, you can cancel anytime from your Billing Portal. You'll retain access until the end of your current billing period.