Ibuprofen Dosage Calculator

Pediatric Ibuprofen Dosing Basics

Ibuprofen is a common over-the-counter fever and pain reliever for children. Weight-based dosing is safer than age-only estimates because children of the same age vary widely in size. This calculator uses standard pediatric limits: 10 mg per kg per dose and 40 mg per kg per day, with hard caps of 400 mg per dose and 1200 mg per day. For other medications, try the Dosage Calculator.

Single Dose and Daily Limits

Maximum single dose equals 10 mg/kg, capped at 400 mg. Maximum daily dose equals 40 mg/kg, capped at 1200 mg. Doses are typically given every 6 to 8 hours, up to four times per day. The tool also converts milligrams to milliliters for common liquid concentrations (100 mg/5 mL and 50 mg/1.25 mL).

Important Safety Notes

In the United States, ibuprofen is generally not recommended for infants under 6 months without provider guidance. Always use an oral syringe or calibrated cup for liquids, not household spoons. Do not combine with other NSAIDs unless directed by a clinician. Contact a pediatrician if fever persists, the child appears very ill, or you are unsure about dosing.