Baby Growth Percentile Calculator (0–24 Months)

CDC 2025 & WHO standards. Enter age, sex, measurements for height, weight, head.

Baby Growth Percentile Calculator 2025: CDC vs WHO Charts

Track your baby’s height, weight, head with CDC and WHO charts. Our calculator shows percentile rank from 0–24 months.

What Are Percentiles?

  • 50th = average
  • 3rd–97th = normal range
  • <3rd or >97th → doctor visit

CDC vs WHO

AspectCDCWHO
PopulationUS babiesGlobal, breastfed ideal
Age0–36 mo0–60 mo
UseUS pediatriciansInternational

Normal Growth Patterns

  • Birth–6 mo: Double birth weight
  • 12 mo: Triple birth weight
  • Length: +25 cm first year

Red Flags

Weight <3rd → failure to thrive
Head >97th → hydrocephalus risk

Premature Babies

  • Use corrected age until 24 months
  • Corrected = chronological – weeks early

Measurement Tips

  • Length: Lying down (0–24 mo)
  • Weight: Naked, same scale
  • Head: Around widest part

Step-by-Step Example

6 mo boy, 7.5 kg, 65 cm, 42 cm head

  • Weight: ~50th (average)
  • Length: ~25th (short)
  • Head: ~50th

Integration with Tools

FAQs

Can percentile change? Yes — growth spurts normal.

Formula vs Breastfed? WHO ideal for breastfed.

Plot on paper? Download CDC charts.

Conclusion

Use our 2025 Baby Growth Calculator monthly. Percentiles ≠ health — consult pediatrician for concerns.

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