Infant & Children's Tylenol (Acetaminophen) Dosage Chart by Weight
Find your child's weight, then give the mL shown for infants' or children's liquid (both 160 mg/5 mL in the US). Every 4 hours as needed, no more than 5 doses in 24 hours. Under 12 weeks, call the doctor first.
Tylenol (acetaminophen) dosage chart by weight
Fixed doses from the AAP HealthyChildren chart (about 10-15 mg/kg per dose). Infants' and children's liquid are both 160 mg/5 mL in the US. Every 4 hours as needed, no more than 5 doses in 24 hours.
| Weight (lb) | Weight (kg) | Typical age | Dose (mL) | Dose (mg) | How often | Max in 24 h | Notes |
|---|---|---|---|---|---|---|---|
| 6-11 | 3-5 | 0-3 months | 1.25 | 40 | Call the doctor first | As the doctor directs | Under 12 weeks: call the doctor before any dose; a fever at this age needs a medical check. Newborns under 1 month get fewer doses a day (no more than 4) and longer gaps. |
| 12-17 | 5-7 | 4-11 months | 2.5 | 80 | every 4 h as needed | 5 doses (400 mg) in 24 h | Under 12 weeks: call the doctor first, even at this weight. Under 2 years: US label says ask a doctor. |
| 18-23 | 8-10 | 12-23 months | 3.75 | 120 | every 4 h as needed | 5 doses (600 mg) in 24 h | Under 2 years: US label says ask a doctor. |
| 24-35 | 11-15 | 2-3 years | 5 | 160 | every 4 h as needed | 5 doses (800 mg) in 24 h | Or 1 chewable (160 mg). |
| 36-47 | 16-21 | 4-5 years | 7.5 | 240 | every 4 h as needed | 5 doses (1,200 mg) in 24 h | Or 1½ chewables (160 mg each). |
| 48-59 | 22-26 | 6-8 years | 10 | 320 | every 4 h as needed | 5 doses (1,600 mg) in 24 h | Or 2 chewables (160 mg each). |
| 60-71 | 27-32 | 9-10 years | 12.5 | 400 | every 4 h as needed | 5 doses (2,000 mg) in 24 h | Or 2½ chewables (160 mg each). |
| 72-95 | 33-43 | 11 years | 15 | 480 | every 4 h as needed | 5 doses (2,400 mg) in 24 h | Or 3 chewables (160 mg each). |
| 96+ | 44+ | 12 years and older | 2 × 325 mg tablets | 650 | every 4 h as needed | 5 doses (3,250 mg) in 24 h | Use adult tablets: 2 × 325 mg (650 mg). Extra strength (2 × 500 mg) only every 6 h, no more than 6 tablets in 24 h. |
Doses follow the AAP HealthyChildren dosing tables; mL is for the liquid concentration shown. If a weight falls between rows, use the lower dose.
Sources: AAP HealthyChildren; DailyMed; FDA (links below). . This chart does not replace the product label or your clinician's advice.
Check the bottle first
Which bottle do I have?
- Liquid 160 mg/5 mL (infants' and children's)
- Chewables 160 mg
- Adult tablets 325 mg (regular) and 500 mg (extra strength, 12 years and older)
Match the strength printed on your bottle or package (mg per mL, per 5 mL, or per tablet) before using the chart.
Safety checks before dosing
- Check every bottle for the exact concentration before dosing.
- Avoid double-dosing with multi-symptom cold/flu products.
- For infants under 12 weeks, contact a clinician for fever or dosing guidance.
When to call a doctor
- Symptoms get worse or do not improve after appropriate dosing.
- Your child has a chronic condition, kidney or liver disease, or takes other medicines.
- You are unsure about the concentration or the correct dose.
Need an exact dose for your child's weight?
- Acetaminophen (Tylenol) dose calculator — enter weight and age for the mg and mL for your bottle.
- Printable Tylenol dosing chart
- All children's OTC dosing charts
Frequently asked questions
It is a reference table that matches a child’s weight to a safe acetaminophen dose. Use the exact concentration on the bottle and never exceed max daily limits.
Children's acetaminophen can be given every 4 hours as needed, no more than 5 doses in 24 hours (label).
Weight-based dosing is more accurate. If you do not know the child’s weight, contact a clinician or pharmacist for guidance.
Alternating can be used in select situations but increases the risk of dosing errors. Follow clinician guidance.
Yes. Tylenol is a brand name for acetaminophen.
If vomiting occurs immediately, contact your clinician for guidance before repeating the dose.