← Back
Endotracheal Tube Size Calculator
Determine appropriate endotracheal tube size based on patient characteristics
About Endotracheal Tube Sizing
Endotracheal tube size selection is crucial for successful intubation and ventilation. The calculator considers patient age, weight, height, and clinical factors to recommend appropriate tube sizes.
Recommended Endotracheal Tube Sizes
Important Guidelines
- Tube Size Selection: Choose the largest tube that can be easily passed through the vocal cords
- Pediatric Considerations: Use age-based formulas: (Age/4) + 4 for uncuffed, (Age/4) + 3.5 for cuffed
- Adult Considerations: Generally 7.0-8.5mm for females, 7.5-9.0mm for males
- Emergency Situations: When in doubt, choose a smaller tube size
- Verification: Always verify tube placement with capnography and chest auscultation
- Backup Sizes: Have tubes 0.5mm larger and smaller available