Child Dosage Calculator

The standard formula is dose (mg) = body weight (kg) × mg per kg. Paracetamol uses 10–15 mg/kg per single dose, ibuprofen 7–10 mg/kg. These come from paediatric prescribing references.

Volume (mL) = dose (mg) ÷ concentration (mg/mL). Example: 300 mg paracetamol at 24 mg/mL = 12.5 mL of syrup.

Paracetamol: max 60 mg/kg/day (or 4 g for older children). Ibuprofen: max 30 mg/kg/day (or 2.4 g). Amoxicillin: 20–90 mg/kg/day depending on indication.

Paracetamol: from birth (with adjusted dosing). Ibuprofen: from 3 months and ≥5 kg. Amoxicillin: from birth with paediatric adjustment. For infants under 3 months always consult a clinician.

Call poison control or emergency services immediately. Paracetamol overdose can cause severe liver damage even when initial symptoms are absent.

No. The calculator is a plausibility tool. The final dose must always be confirmed by a licensed clinician or pharmacist.