Pediatric Dosage Calculator
Calculate pediatric medication doses using weight-based, BSA-based, and age-based formulas including Clark's, Young's, and Fried's rules.
Child Information
Dosing Information
mg
Standard adult dose for age-based calculations
mg/kg
Per-kg dose from drug reference
mg
Do not exceed adult dose
Recommended Dose
200.0 mg
Weight-based (mg/kg)
⚖️Weight-Based
200.0 mg
📐BSA-Based
225.9 mg
👶Child BSA
0.78 m²
🎯Child Weight
20.0 kg
Age-Based Methods
Clark's Rule: 147.0 mg
Young's Rule: 147.1 mg
Important Notice
Always verify doses with pediatric drug references. Weight-based dosing (mg/kg) is preferred when specific recommendations are available.
Pediatric Dosing Formulas
Traditional Rules
- Clark's Rule: (Weight in lbs / 150) × Adult dose
- Young's Rule: [Age / (Age + 12)] × Adult dose
- Fried's Rule: (Age in months / 150) × Adult dose
Modern Approaches
- Weight-based: mg/kg × weight (preferred)
- BSA-based: (Child BSA / 1.73) × Adult dose
- Always check: Maximum dose limits