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Anaesthesiology · Paediatrics · ICU and Critical Care

Pediatric Endotracheal Tube Size calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

years

Allowed range: 1–12 years

Tube type

Result

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Clinical inputs

  • Age (years)Accepted range: 1 to 12
  • Tube type

Primary source

Khine HH et al. Comparison of cuffed and uncuffed endotracheal tubes in young children during general anesthesia. Anesthesiology. PMID: 9066329. Uncuffed internal diameter in millimeters is age/4 + 4 (Cole F. AMA J Dis Child. PMID: 13478300). Cuffed internal diameter is age/4 + 3.5. (1997)

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