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Emergency/Resus

Estimated Weight for Age (APLS)

Estimates a child's weight from age when it cannot be measured — for emergencies (APLS / Luscombe-Owens formulae).

Written for clinicians. If you're a parent or patient, don't act on these numbers — talk to your child's doctor.

Scope: For resuscitation when weight is unknown. Always replace with a measured weight as soon as possible.

Inputs

FieldUnitNotes
Age band
Age Months if infant, otherwise years

FAQ

What is the Estimated Weight for Age (APLS)?

Estimates a child's weight from age when it cannot be measured — for emergencies (APLS / Luscombe-Owens formulae).

What inputs does the Estimated Weight for Age (APLS) need?

Age band, Age.

Are there any limitations?

For resuscitation when weight is unknown. Always replace with a measured weight as soon as possible.

Related guides

APLS Weight Estimation: Age-Based Formulae for the Resus Room

Age-based pediatric weight estimation (APLS / Luscombe-Owens) for emergencies — the three age-band formulae, a worked example, and when a measured weight or Broselow tape beats them.

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