Parenting & Baby · Free tool
Baby Weight Percentile Calculator
WHO/CDC growth chart percentile from age, sex, and weight. 0-36 months.
Percentile estimate
Between the 15th and 50th percentile
- 3rd
- 14.1 lbs
- 15th
- 15.7 lbs
- 50th (median)
- 17.4 lbs
- 85th
- 19.4 lbs
- 97th
- 21.4 lbs
Read percentiles as a trend, not a grade
Percentiles measure growth trend over time. A single reading doesn’t mean anything — a healthy baby can sit in the 10th, 50th, or 90th percentile and be perfectly fine. What matters is whether your baby is following their own curve. Track with your pediatrician at each well-visit.
Chart values approximate WHO standards (0–24 months) and CDC references (24–36 months) — useful for a quick check, not a diagnostic tool.
Advertisement
What it does
WHO and CDC percentiles without a clinic visit. Track the trend — a single reading means nothing; the curve means everything.
Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/baby-weight-percentile" width="100%" height="720" frameborder="0" loading="lazy" title="Baby Weight Percentile Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Enter baby age, sex, weight.
- Read percentile.
- Track with pediatrician.
Advertisement