Weight-based Dosing Calculator
Single-dose amount from a prescribed mg/kg dose
Equation & limitations
- Equation
- Single dose (mg) = dose per kg (mg/kg) × weight (kg)
- Version
- Site-defined arithmetic (mg/kg × body weight)
- Source
- Defined by Pharmapedia for this tool; not a single canonical published formula.
- Appropriate in
- Only where a prescriber has already given a mg/kg dose for THIS drug and patient.
- Limitations
- Is arithmetic only — it does not add safety, indication or maximum-dose checks.
- Entering a mg/kg value yourself does NOT create a prescription. Never dose a patient from this tool.
- mg/kg/day versus mg/kg/dose conventions differ by drug; confirm which unit the prescriber means.
For educational use. Results support, and do not replace, clinical judgement — check them against the patient and local guidelines.