100 mg / 5 ml syrupWeight-basedPrintable reportDoctor reviewed
Paracetamol 100 mg/5 ml Syrup — Dose by Weight
This calculator is pre-set to the 100 mg/5 ml strength (20 mg of paracetamol per ml) — a common lower-strength paediatric paracetamol syrup. Enter your child's weight to get the dose in millilitres, with safe spacing and a 24-hour limit.
Check your bottle: 100 mg / 5 ml
This page assumes a 100 mg/5 ml (20 mg/ml) syrup. Paediatric drops are often more concentrated — read the label and change the strength if needed.
Not for emergencies
This tool is informational and does not replace a clinician. Seek urgent care for a baby under 3 months with fever, or any child with breathing difficulty, severe drowsiness, seizures, dehydration, persistent vomiting, or suspected overdose.
Dose report
Enter details above and run the calculation.
We'll show a clear single dose, a 24-hour timeline, and warnings. Plus a downloadable PDF report you can share with your paediatrician.
Frequently asked questions
How is a child's paracetamol dose calculated by weight?
Paediatric paracetamol is dosed at about 10–15 mg per kg of body weight per dose, every 4–6 hours as needed, with a maximum of 4 doses (and ≤ 60 mg/kg) in 24 hours. The calculator converts that mg dose into millilitres for the syrup strength you select.
Is dose based on age or weight?
Weight gives a far more accurate paediatric dose than age. Always dose by the child's current weight where possible; age is only a rough fallback.
How often can paracetamol be given to a child?
No more often than every 4 hours, and no more than 4 doses in 24 hours. The calculator shows an hour-by-hour timeline and enforces the 24-hour cap.
When should I seek urgent care instead?
Seek urgent medical care for a baby under 3 months with fever, or any child with breathing difficulty, severe drowsiness, repeated vomiting, dehydration, a seizure, or suspected overdose. This tool is informational and does not replace a clinician.
How much 100 mg/5 ml syrup for an 8 kg baby?
At 15 mg/kg an 8 kg child needs about 120 mg per dose. 100 mg/5 ml syrup is 20 mg/ml, so that is roughly 6 ml. Babies under 3 months should always be seen by a clinician; confirm the strength on your bottle.
