Child Dosage Calculator

Calculate safe OTC medication doses for children based on weight. Always verify with your pediatrician.

Disclaimer: This calculator provides general dosage guidelines only. Always consult your pediatrician or pharmacist before giving medication to your child.

Recommended Dose
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formulation info
Dose in mg
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Dose Frequency
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Max Daily Doses
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Max Daily Amount
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Dosage by Weight Chart

Pediatric Medication Dosing Guidelines

Weight-based dosing is more accurate than age-based dosing for children. Always use the measuring device that comes with the medication, never a household spoon.

Key Safety Rules

  • Acetaminophen: 10-15 mg/kg every 4-6 hours. No more than 5 doses in 24 hours.
  • Ibuprofen: 5-10 mg/kg every 6-8 hours. Not for babies under 6 months.
  • Diphenhydramine: 1-1.25 mg/kg every 6 hours. Not for children under 2 without doctor approval.
  • Never give aspirin to children (risk of Reye's syndrome)
  • Do not combine medications without consulting a doctor

When to Call the Doctor

Contact your pediatrician if fever persists more than 3 days, if your child is under 3 months with any fever, or if symptoms worsen despite medication.

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