Motrin / Children’s Ibuprofen Dosage by Weight Calculator
Find the ibuprofen (Motrin, Advil) dose for children aged 6 months and older from weight, in both children’s liquid (100 mg/5 mL) and infant drops (50 mg/1.25 mL). Example: a 22 lb (10 kg) child can have 50 to 100 mg, which is 2.5 to 5 mL of children’s liquid; the label amount is 3.75 mL, at most every 6 hours.
Show steps
How to use the Motrin / Children’s Ibuprofen Dosage by Weight Calculator
- Enter the values in the fields.
- Press Calculate to see the result with the steps shown.
Formula and method
Dose (mg) = weight (kg) x 5 to 10 mg/kg every 6 to 8 hours, maximum 40 mg/kg per day. Volume (mL) = mg / 20 for children’s liquid (100 mg/5 mL) or mg / 40 for infant drops.
Motrin dosage chart by weight (children’s liquid 100 mg/5 mL)
| Weight (lb) | Weight (kg) | Dose |
|---|---|---|
| 12 to 17 lb | 5.4 to 7.7 kg | 2.5 mL |
| 18 to 23 lb | 8.2 to 10.4 kg | 3.75 mL |
| 24 to 35 lb | 10.9 to 15.9 kg | 5 mL |
| 36 to 47 lb | 16.3 to 21.3 kg | 7.5 mL |
| 48 to 59 lb | 21.8 to 26.8 kg | 10 mL |
| 60 to 71 lb | 27.2 to 32.2 kg | 12.5 mL |
| 72 to 95 lb | 32.7 to 43.1 kg | 15 mL |
| 96 lb and over | 43.5 kg and over | 20 mL |
Ibuprofen versus acetaminophen
| Feature | Ibuprofen (Motrin, Advil) | Acetaminophen (Tylenol) |
|---|---|---|
| Minimum age | 6 months | 12 weeks (with doctor advice) |
| Dosing interval | 6 to 8 hours | 4 to 6 hours |
| Give with food | Yes | Not required |
| Avoid if | Dehydrated, kidney problems | Liver problems |
Infant drops versus children’s liquid
The two liquids come in different strengths. Check the concentration on the label and use the matching syringe or cup.
Safety. This calculator is for education and is not medical advice. Always read the product label, use the dosing syringe that came with the medicine, and call your pediatrician or Poison Control (1-800-222-1222 in the US) if you are unsure.
undefined
Frequently asked questions
How much Motrin can I give my child by weight?
5 to 10 mg per kg every 6 to 8 hours.
How much ibuprofen for a 30 lb child?
The label amount is 5 mL of 100 mg/5 mL liquid.
Can babies have ibuprofen?
Not under 6 months.
How often can I give Motrin?
Every 6 to 8 hours, up to 4 doses in 24 hours.
Can I alternate Tylenol and Motrin?
Ask your pediatrician first.
What if my child vomits after the dose?
Call your doctor before repeating.
Sources
Related calculators
Related to This Article
More math articles
- Sterilizer Anatomy and Cycle Phases
- Relating Fractions and Decimals for 4th Grade
- Inflation, Unemployment, and Expectations
- The Ultimate SSAT Upper Level Math Formula Cheat Sheet
- New York Grade 2 English Worksheets — Free and Printable
- Estimate Differences for 4th Grade
- VA Loan Calculator With Funding Fee, Taxes & Insurance
- Problem, Solution, and Description
- 4th Grade MCAS Math FREE Sample Practice Questions
- 5th Grade IAR Math FREE Sample Practice Questions
What people say about "Motrin Dosage by Weight Calculator: Children's Ibuprofen Chart"?
No one replied yet.