A friendly way to watch your kid grow
Plot your child's growth against official CDC and WHO charts, and get a fun, ballpark sense of where it might be headed — how tall they'll grow, and more.
Made for fun and general information — not a medical tool. See below.
What it does
Track growth the way pediatricians do
Log height, weight, and BMI, and see them plotted against the same official CDC and WHO growth reference charts doctors use.
See where it might be headed
Projects future measurements by following your child's current percentile trend, and estimates adult height using the well-known Khamis-Roche method.
Every kid in the family
Keep separate profiles for as many children as you want, each with its own growth history and charts.
100% private
No accounts, no ads, no analytics. Every measurement you enter stays only on your device — nothing is ever uploaded anywhere.
Why it's free
Size Me Up was built as a small side project — something fun to make and use with my own kids, not a business. There's no monetization, no ads, and no plan to ever add any. It's just a nice little tool, free for anyone who wants it.
Not a medical tool. Size Me Up is for informational and tracking purposes only. It is not a diagnostic tool, does not replace regular pediatrician visits, and any concerns about your child's growth should be discussed with your child's doctor.