Pharmacology Calculators — Clinical Medicine
Weight- and renal-function-based dosing: creatinine clearance by Cockcroft-Gault, aminoglycoside and digoxin dosing, and acetaminophen toxicity assessment. These are clinical decision aids that assume trained interpretation and current local protocols.
All Pharmacology Calculators
Assess acetaminophen toxicity risk from dose ingested and time using the Rumack-Matthew nomogram.
Calculate extended-interval aminoglycoside doses and monitoring from weight and CrCl.
Estimate creatinine clearance for drug dosing using the Cockcroft-Gault equation.
Calculate digoxin loading and maintenance doses from weight, renal function, and lean body mass.
Calculate extended-interval gentamicin doses from weight and renal function.
Calculate weight-based heparin drip rates and bolus doses with aPTT adjustments.
Convert between opioid medications using morphine milligram equivalents (MME).
Correct phenytoin levels for albumin and renal function using Winter-Tozer equation.
Convert between equivalent doses of corticosteroids (prednisone, dexamethasone, hydrocortisone).
Calculate initial vancomycin doses based on weight, renal function, and target trough.
Estimate warfarin maintenance doses based on INR results and dosing algorithms.
About Pharmacology Calculators
Weight- and renal-function-based dosing: creatinine clearance by Cockcroft-Gault, aminoglycoside and digoxin dosing, and acetaminophen toxicity assessment. These are clinical decision aids that assume trained interpretation and current local protocols.
Whether you need to solve a one-time problem or verify your own calculations, these free tools cover the most common pharmacology scenarios. All results are computed in your browser — no data is sent to any server.
What You Can Calculate
This section includes 11 tools: Acetaminophen Toxicity Calculator, Aminoglycoside Dosing Calculator, Cockcroft-Gault CrCl Calculator, Digoxin Dosing Calculator, Gentamicin Dosing Calculator, Heparin Dosing Calculator, Opioid Conversion Calculator, Phenytoin Correction Calculator, and 3 more. Each calculator is free to use with no signup required.