Pediatric Weight-Based Dose Calculator (mg/kg)
Weight-based pediatric dosing remains the foundation of paediatric pharmacotherapy. This calculator multiplies weight (kg) by the dose (mg/kg) and applies an optional maximum single-dose cap. The American Academy of Pediatrics and most institutional dosing references rely on this framework, with adjustments for age band, renal function, and obesity-adjusted dosing in select medications. Always cross-reference an institutional formulary, the FDA label, and a paediatric pharmacist before administering — the calculator does not validate that the chosen mg/kg or maximum dose is appropriate for the medication.
This tool is for educational and decision-support use only. It does not replace independent clinical judgement. Always verify against the current guideline, FDA label, or specialty reference cited below before acting. Do not enter patient identifiers (name, MRN, dates of service).
Tool
Who this is for
- Paediatric residents and APPs
- Emergency physicians dosing for paediatric patients
- Hospital and community pharmacists
How to interpret the result
| Score / band | Interpretation |
|---|---|
| Calculated dose | Weight × mg/kg, rounded to a clinically usable dose. |
| Capped final dose | If the calculated dose exceeds the max, the final dose is the cap. |