This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.
Weight estimation by body length and age
Weight from length via the median of the WHO/CDC references; APLS age formulas for comparison
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
Weight estimation by body length and age: What does this calculator compute?
Estimates body weight for emergency dosing by length, using the median of the weight-for-length and weight-for-height references (WHO 2006, CDC 2000), and for comparison by age using the APLS formulas as a rough fallback estimate; ERC 2025 prefers information from the parents and length-based methods, if possible with a correction for body habitus.
Weight estimation by body length and age: Which sources is this calculator based on?
Djakow J, et al.: European Resuscitation Council Guidelines 2025: Paediatric Life Support (Resuscitation 215 Suppl 1:110767) (2025); Advanced Life Support Group: Advanced Paediatric Life Support: The Practical Approach, ed. 5, chapter 3 (weight formulas; cited from Luscombe & Owens 2007) (2011); Luscombe M, Owens B: Weight estimation in resuscitation: is the current formula still valid? (Arch Dis Child 92:412–415) (2007)