Pediatric Dose Calculator
Calculate pediatric medication doses using Clark"s Rule and Young"s Rule.
Enter adult dose and child"s weight or age for accurate dosing.
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Pediatric Dose
Pediatric dosing adjusts adult medication doses for children based on weight or age.
Clark"s Rule (weight-based, preferred):
Child Dose = (Child Weight in lbs / 150) x Adult Dose
Or in metric:
Child Dose = (Child Weight in kg / 68) x Adult Dose
Young"s Rule (age-based):
Child Dose = (Age in years / (Age + 12)) x Adult Dose
Which rule to use:
- Clark"s Rule is generally more accurate because it accounts for the child"s actual size
- Young"s Rule is useful when weight is not available
- Both are approximations — weight-based mg/kg dosing from drug references is always preferred
Important safety notes:
- These rules are rough estimates for educational purposes
- Always use manufacturer"s pediatric dosing guidelines when available
- Never exceed the adult dose
- Some medications have specific pediatric formulations with different concentrations
- Always verify with a pharmacist or healthcare provider
Age ranges for Young"s Rule: 1–12 years only. Not for infants or adolescents.