📏 Growth Tracker
Enter your child's age, sex, weight, and height to see which broad percentile band each measurement falls in against a simplified WHO-style reference, from birth to 36 months.
Informational only — not medical advice. Growth is properly assessed over time by your pediatrician.
📐 Check the Bands
📏 Growth bands (vs. 12-month reference)
What is a Growth Tracker?
It gives a home measurement some context. Weigh and measure your child, enter age and sex, and the tool places each figure in one of five broad bands — under the 5th percentile, 5th–25th, 25th–75th, 75th–95th, or above the 95th — using a small, documented reference table condensed from the WHO-style charts pediatricians commonly use for under-threes.
The honest use of a tool like this is curiosity between checkups: a quick "roughly where is she on the chart?" after a growth spurt, or a sanity check when the travel crib suddenly looks small. It is deliberately coarse, and it is not a growth chart, a trend line, or a verdict — those belong to your pediatrician's plotted curve.
❓ Frequently Asked Questions
What do the percentile bands mean?
A percentile compares your child with other children the same age and sex: weight in the 25th–75th band means somewhere in the middle half of the reference population. Every band on the chart is normal — a healthy child can live their whole childhood at the 10th percentile. What clinicians watch is the trend over time, not any single point.
Where do the reference numbers come from?
The tool embeds a deliberately simplified table of approximate 5th, 25th, 75th, and 95th percentile points at selected ages, distilled from the WHO-style growth references commonly published for children under 3. Your entry is compared at the nearest listed age, so the output is a broad band, not a precise percentile.
Why does it only give a band and not an exact percentile?
Because precision here would be false precision. Real growth assessment plots repeated measurements on full charts, adjusts for gestational age and measurement technique, and reads the curve — a single home measurement against a condensed table can honestly support only a broad range.
Is this medical advice?
No — it is an informational lookup against documented reference constants, never a diagnosis. If a measurement surprises you, or your child seems to be crossing bands over time, the right move is a conversation with your pediatrician, who measures precisely and reads the whole curve.