Children's Tylenol Dose Finder
Acetaminophen (Tylenol®) Calculator
Professional Pediatric Dosing Guide
| Frequency | Max (24h) | Wait Time |
|---|---|---|
| Every 4-6 Hours | 5 Doses | Minimum 4 Hours |
This tool uses the $15\text{ mg/kg}$ clinical standard. Calculations are for educational purposes only.
The Children’s Tylenol Dose Finder helps parents and caregivers quickly determine the safe, correct dosage of liquid acetaminophen for infants and children.
Because children process medication based on their size rather than their age, always dose by weight first. Only use age if you do not know the child’s current weight.
The Core Golden Rule: 160 mg / 5 mL
In the United States, all liquid acetaminophen for children—both Infants’ Tylenol and Children’s Tylenol—shares the exact same liquid concentration:
Critical Warning: Older formulations of Infants’ Tylenol were much stronger ($80\text{ mg} / 0.8\text{ mL}$). Always check your bottle to ensure it reads $160\text{ mg}$ per $5\text{ mL}$ before using this guide, and always use the syringe or dosing cup that came in the exact same box to measure. Never use a kitchen spoon.
Dosage Finder Chart (Weight-Based)
You can repeat a safe dose every 4 to 6 hours as needed. Do not give more than 5 doses within a 24-hour period.
| Child’s Weight (lbs) | Child’s Age (approx.) | Liquid Dose (mL) | Strength (mg) |
| Under 12 lbs | Under 12 weeks | Consult doctor | Consult doctor |
| 12 – 17 lbs | 4 – 11 months | 2.5 mL | 80 mg |
| 18 – 23 lbs | 12 – 23 months | 3.75 mL | 120 mg |
| 24 – 35 lbs | 2 – 3 years | 5 mL | 160 mg |
| 36 – 47 lbs | 4 – 5 years | 7.5 mL | 240 mg |
| 48 – 59 lbs | 6 – 8 years | 10 mL | 320 mg |
| 60 – 71 lbs | 9 – 10 years | 12.5 mL | 400 mg |
| 72 – 95 lbs | 11 years | 15 mL | 480 mg |
Key Safety Checklist
Under 12 Weeks: Always call your pediatrician for a precise dose before administering acetaminophen to a newborn or infant under 3 months old. A fever in a young infant requires immediate medical evaluation.
Check Other Medications: Many over-the-counter cold and cough syrups also contain acetaminophen. Check all active ingredient labels carefully to avoid an accidental, dangerous overdose.
Know the Limits: Stop using the medication and consult a pediatrician if your child’s fever lasts more than 3 days, or if their pain lasts more than 5 days.
