Children’s Motrin Dosage Chart & Ibuprofen Calculator

Find children's ibuprofen label directions using a weight or age range and matching the bottle strength. Do not give ibuprofen to a child younger than 6 months unless a healthcare professional instructs you to do so.

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Children’s Motrin dosage chart by weight and age

This pediatric ibuprofen calculator uses Children’s and Infants’ Motrin labels. Choose your bottle and match its concentration. These are separate bottle options in the calculator. Directions for one concentration must not be reused for another.

Children’s Motrin dosage chart by weight and age

US liquid products shown here only. Do not apply these amounts to another strength, formulation or country’s product. Use the measuring device supplied with your bottle and read the full label; this page does not reproduce every warning.

Children’s MOTRIN — 100 mg / 5 mL

Use weight if known; otherwise use age. The weight and age columns are alternatives from the label, not a formula. If the child is outside the listed age range or the weight falls outside a printed band, ask a clinician. Do not interpolate.

Children’s MOTRIN — 100 mg / 5 mL
Weight (lb)Age on labelLabel amountLabel reference
Under 24Under 2 yearsAsk your child’s doctorUnder 24 lb
24–352–3 years5 mL24–35 lb
36–474–5 years7.5 mL36–47 lb
48–596–8 years10 mL48–59 lb
60–719–10 years12.5 mL60–71 lb
72–9511 years15 mL72–95 lb

Label interval: every 6–8 hours if needed. No more than 4 doses in 24 hours.

Full MOTRIN label guidance

Infants’ MOTRIN — 50 mg / 1.25 mL

Use weight if known; otherwise use age. The weight and age columns are alternatives from the label, not a formula. If the child is outside the listed age range or the weight falls outside a printed band, ask a clinician. Do not interpolate.

Infants’ MOTRIN — 50 mg / 1.25 mL
Weight (lb)Age on labelLabel amountLabel reference
Under 12Under 6 monthsAsk your child’s doctorUnder 12 lb
12–176–11 months1.25 mL12–17 lb
18–2312–23 months1.875 mL18–23 lb

Label interval: every 6–8 hours if needed. No more than 4 doses in 24 hours.

Full MOTRIN label guidance

Supported bottles

US liquid products supported by this calculator
BottleIngredientStrengthUses
Children’s MOTRINIbuprofen100 mg / 5 mLWeight or age
Infants’ MOTRINIbuprofen50 mg / 1.25 mLWeight or age

Can I switch between Children’s and Infants’ Motrin?

Changing the bottle clears the previous confirmation and range. Confirm the new concentration and choose the appropriate weight or age range again before viewing directions.

Read the manufacturer’s full guidance

Is Motrin ibuprofen?

Yes. Ibuprofen is the active ingredient in the Motrin liquids shown here. Motrin is a brand name, while ibuprofen identifies the ingredient. Check the exact product and concentration before selecting a bottle.

Are Infants’ and Children’s Motrin the same strength?

The US bottles shown here have different strengths: Infants’ Motrin is 50 mg per 1.25 mL; Children’s Motrin is 100 mg per 5 mL. Match the full concentration on your bottle before using its chart. Do not reuse the same liquid amount for a different strength.

Is this a pediatric ibuprofen mg/kg calculator?

No. KinToolkit looks up the printed label’s weight bands in pounds or its age bands. It does not calculate a continuous mg/kg dose, round a weight into a band, or convert between bottle strengths. If your child falls outside the listed bands, ask a pharmacist or clinician.

Does this calculator cover adult ibuprofen or other brands?

The interactive calculator supports only the bottles listed in its selector; it does not provide adult or tablet directions. For another brand, check the exact product’s Drug Facts and any separately identified label reference. Do not use a Motrin chart for an unlisted bottle based on the ingredient alone.

Store-brand label references

Find the label for your exact store-brand product below. These are label references, not additional bottles in the guided questions. Use that flow only for bottles shown in its selector. Read your own package’s Drug Facts before use.

Published labels checked September 25, 2026. Product names, flavors and package codes identify the specific labels reviewed; other versions may differ.

Keep another caregiver in the loop

Share this calculator so they can match their own bottle. The link contains no child details or dosage results.

How KinToolkit prepares this information

KinToolkit organizes the selected US liquid medicine labels into bottle-matching tools and reference tables. The calculator and these tables use the same range lookup, not a continuous weight formula. Manufacturer labels are the primary sources; this summary does not establish an independently validated or clinically reviewed dosing protocol.

Label sources checked: . This is a source-check date, not a clinical-review date.

Before using label directions

Verify the active ingredient, concentration and warnings on your own package. KinToolkit is an independent educational tool, not a medical professional or a substitute for your child’s clinician. The brands mentioned above are not affiliated with KinToolkit.

Sources and accessible text

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