Pediatric Drug Dosage Calculator
Calculate safe and effective drug dosages for children using weight-based, BSA-based, and age-based formulas.
Patient Information
Drug Parameters
mg
Standard adult dose for comparison
mg/kg
For weight-based calculations
Recommended Pediatric Dose
200.0 mg
Maximum safe dose: 200.0 mg
⚖️Weight-Based
200.0 mg
📐BSA-Based
225.9 mg
📊Clark's Rule
147.0 mg
👶Young's Rule
147.1 mg
Patient Parameters
Weight: 20.0 kg
BSA: 0.782 m²
Age: 5.0 years
Important Notice
These calculations are estimates. Always verify doses with current drug references, consider organ function, and consult with a pharmacist or physician.
Dosing Methods Explained
| Method | Formula | Best For |
|---|---|---|
| Weight-Based | Weight (kg) × mg/kg | Most common, recommended method |
| BSA-Based | (Child BSA / 1.73) × Adult Dose | Chemotherapy, narrow therapeutic index |
| Clark's Rule | (Weight lbs / 150) × Adult Dose | Historical method |
| Young's Rule | (Age / (Age + 12)) × Adult Dose | Children 1-12 years |
| Fried's Rule | (Age in months / 150) × Adult Dose | Infants under 1 year |