Ready when you are
Enter one or more measurements, then calculate to see percentile cards.
LittleArc tools
Growth percentiles, without the waiting-room math.
Enter a child's sex, age, and latest measurements to prepare a growth note. Percentile calculation is paused until LittleArc replaces the scaffold with clinically reviewed WHO LMS reference tables.
Calculator
Child measurements
Results
Percentile snapshot
Band chart
Where the measurements sit
Measurement rails will appear after calculation.
Reference bands at this age
Values are interpolated between compact monthly anchors.
| Metric | P3 | P15 | P50 | P85 | P97 |
|---|
Clinical disclaimer
This is a planning aid, not a diagnosis.
Percentile scoring is paused because the previous compact scaffold was not a clinically validated full WHO chart. Growth trends, gestational age, illness, nutrition, and measurement technique matter. Always review concerns with a pediatrician.
Frequently asked questions
- What is a growth percentile?
- A growth percentile shows how a child's measurement compares with other children of the same age and sex. The 50th percentile is the median; being on a steady curve usually matters more than the exact number.
- Is my baby's weight normal?
- Most healthy children sit anywhere between the 3rd and 97th percentile, and the trend over time matters more than a single reading. This tool gives an estimate only — discuss any concern with your pediatrician.
- Does this use the official WHO growth chart?
- The previous compact scaffold is paused while the WHO LMS tables are replaced and clinically reviewed. Use official growth records and your pediatrician for interpretation.