This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.
Laryngeal mask size
Laryngeal mask size by body weight and product (LMA Supreme or i-gel, manufacturer's information)
Calculation aid for healthcare professionals: the calculator reproduces what the sources cited assign to the inputs. Clinical assessment and every treatment decision remain with the treating physician. Inputs and results are not stored.
Frequently asked questions
Laryngeal mask size: What does this calculator compute?
Assigns the laryngeal mask size to the body weight according to the manufacturer's information for the selected product: LMA Supreme (Teleflex: 1 to 5 kg, 1.5 for 5–10 kg, 2 for 10–20 kg, 2.5 for 20–30 kg, 3 for 30–50 kg, 4 for 50–70 kg, 5 for 70–100 kg) or i-gel (Intersurgical: 1 for 2–5 kg, 1.5 for 5–12 kg, 2 for 10–25 kg, 2.5 for 25–35 kg, 3 for 30–60 kg, 4 for 50–90 kg, 5 from 90 kg); there is no table valid for all products.
Laryngeal mask size: Which sources is this calculator based on?
Teleflex Incorporated: LMA Supreme Airway – User Guide (MC-000163 Rev 1): Size chart: mask size by patient weight (2021); Intersurgical Ltd: i-gel supraglottic airway – Product page: Sizes 1–5 by patient weight (2026)