Birthweight Percentile Calculator

Free calculate birthweight percentile based on gestational age and sex. This is an educational tool only - always consult a healthcare provider.

Baby Information

Results

Enter baby information to calculate percentile

About Birthweight Percentiles

  • • <10th percentile: SGA (Small for Gestational Age)
  • • 10th-90th percentile: AGA (Appropriate for Gestational Age)
  • • >90th percentile: LGA (Large for Gestational Age)
  • • Percentiles vary by gestational age and sex