Infant Fever Reducer Dosage Calculator
Enter your baby's weight to get a single-dose amount for fever medicine
Enter your baby's weight and this tool works out the recommended single dose in milliliters for both acetaminophen-based (Tylenol-type) and ibuprofen-based (Motrin-type) fever reducers. It was built for parents squinting at the markings on a syringe at 3 a.m. when a fever comes out of nowhere, and every calculation runs entirely in your browser, so nothing you type is sent to a server.
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Enter your baby's current weight in kilograms.
- The recommended single-dose range appears automatically for acetaminophen (red) and ibuprofen (blue).
- Review the dosing interval and alternating-dose guidance below the results.
- Always follow the product label or your pediatrician's instructions before giving any medicine.
FAQ
- Can I dose my child based on this result alone?
- No. This tool only shows general weight-based dosage ranges for reference. The correct dose must come from the product label and your pediatrician.
- Is it okay to give acetaminophen and ibuprofen together?
- If you alternate between the two ingredients, leave at least two hours between doses, and talk to a healthcare provider before you start.
- Can I use this for a baby under 3 months old?
- If a baby under 3 months has a fever of 100.4°F (38°C) or higher, skip this tool and go to a pediatric emergency room right away.