Free Pharmaceutical Calculators
Pharma Calculators
Dosage, dilution, IV drip rate, creatinine clearance, half-life, BSA — all the calculators you need for daily pharmaceutical work. Free, no login required.
All Calculators
About These Pharmaceutical Calculators
These calculators are built for pharmacists, nurses, clinical researchers, formulation scientists, and pharmacy students who need fast, reliable results without downloading software or logging into a platform. Each calculator is designed to match the formulas used in standard pharmaceutical references and clinical practice guidelines.
Dosage & Clinical Calculators
The Dosage Calculator handles weight-based (mg/kg) prescribing. The Creatinine Clearance Calculator uses the Cockcroft-Gault equation for renal dose adjustments. The IV Drip Rate Calculator converts volume, drop factor, and infusion time into drops per minute.
Lab & Formulation Calculators
The Dilution Calculator applies the C1V1=C2V2 equation for bench dilutions. The Molarity Calculator determines solution concentration in mol/L. The Buffer pH Calculator uses Henderson-Hasselbalch to predict pH from acid/base ratios.
Pharmacokinetics Calculators
Use the Half-Life Calculator to find the amount of drug remaining after any number of half-lives, or the time to reach a target concentration. Ideal for PK/PD coursework and clinical practice.