Height, weight and BMI percentile charts powered by WHO standards. Built for parents who want clinically grounded tracking without spreadsheet work.
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.
Simple trajectory views help parents understand how recent measurements are changing over time.
Generate professional PDF reports with full chart history and statistics — perfect for paediatrician visits. Premium feature.
Clear visual flags help families notice measurements that should be discussed with a pediatrician.
Your child's data is encrypted, stored in a private self-hosted database, and never sold. Full GDPR data export and deletion.
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
GrowChart costs less than one pediatric appointment — and gives you everything Huckleberry and BabyConnect charge 2–4× more for.
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.