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Weight-Based Dosage Calculator

Calculate paediatric or adult doses based on body weight. Educational use only.

Per dose
300.0 mg
Total per day
900.0 mg
Volume per dose
6.00 ml
Volume per day
18.00 ml

Educational reference only. Always confirm prescriptions with a qualified clinician.

About this tool

Calculates weight-based medication dosing (mg/kg), per-dose and total daily amounts, and the corresponding volume in millilitres for any liquid concentration.

How to use
  1. 1Enter patient weight in kg or lb.
  2. 2Enter the prescribed dose in mg/kg and doses per day.
  3. 3Optionally enter the syrup strength (mg per ml) for liquid volume.
Good to know

Educational reference only. Always confirm doses with a qualified clinician — paediatric and renal dosing in particular need professional judgement.