Growth & Paediatrics

Every growth & paediatrics calculator on CalcEngines — each with its formula, a worked example, the standard it follows and the assumptions it makes.

1 calculator in this section

• Paediatric Weight Estimation Calculator (kg, Age-Based)What six published age-based formulas give for the same child — the traditional APLS (age + 4) × 2, the three-band APLS set in use since 2011, Luscombe and Owens' 3 × age + 7, Best Guess, Nelson's and Argall's — with the gap between the highest and the lowest shown as a headline figure rather than a footnote, and the published accuracy on the page: in a validation of 410 children, these formulas landed within 10% of the measured weight between 34% and 45.4% of the time, against a proposed minimum of 70%. A measured weight always replaces an estimate.

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