Pediatric Endotracheal Tube Size



Several formulas such as the ones below allow estimation of proper endotracheal tube size for children 1 to 10 years of age, based on the child's age:

  • Uncuffed endotracheal tube size (mm ID) = (age in years/4) + 4
  • Cuffed endotracheal tube size (mm ID) = (age in years/4) + 3


Circulation 2005;112;IV-167-IV-187; originally published online Nov 28, 2005;

The Pediatric Endotracheal Tube Size calculator is created by QxMD.

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1. Age?

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