Equipment size calculations MenuAbout this calculatorCalculatorDiscussionPage informationContributorsHistoryWhat links herePrintable versionCite this page

The equipment size calculations are based upon patient statistics provided in the fields above. As with all clinical decision support tools, ultimately use clinical judgement when selecting the dose to be administered for a specific patient.

• Some calculations may have important additional information which can be shown using the question mark icon

Contributing to this calculator

See the calculators guide to learn about the process to get the special permissions required to contribute to calculators in general.

The equipment size calculations are powered by the patients and equipmentSize modules.

Search equipment

Laryngoscope blade size (MAC)

Age required

1. Smith's Anesthesia for Infants and Children. 8e. p356

Laryngoscope blade size (Miller)

Age required

1. Smith's Anesthesia for Infants and Children. 8e. p356

Endotracheal tube (ETT) size

Age required

1. Smith's Anesthesia for Infants and Children. 8e. p356

Endotracheal tube (ETT) depth

Age required

1. Techanivate A, Kumwilaisak K, Samranrean S. Estimation of the proper length of orotracheal intubation by Chula formula. J Med Assoc Thai. 2005 Dec;88(12):1838-46. PMID: 16518983.
2. Smith's Anesthesia for Infants and Children. 8e. p356

Laryngeal mask airway (LMA) size

Weight required

1. Smith's Anesthesia for Infants and Children. 8e. p312