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Broselow Pediatric Emergency Weight Estimator

Weight (kg) ≈ 2 × (age + 4) — APLS formula for children.

Estimates a child's weight in an emergency from age using standard pediatric formulas (APLS and Luscombe-Owens) when a scale is unavailable.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

APLS: W = 2×(age+4); Luscombe: W = 3×age+7 (1–10 yrs)

In depth

Estimates a child's weight in an emergency from age using standard pediatric formulas (APLS and Luscombe-Owens) when a scale is unavailable.