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Designed for healthcare professionals worldwide for accurate, evidence-based clinical calculations
Quick access to the most searched tools.
Convert dose in mg to volume in mL
Weight-based dosing to volume per dose
Convert volume to insulin or heparin units
Convert insulin or heparin units to volume
Convert infusion rate to drops per minute
Convert drops per minute to mL/hr rate
Calculate how long an IV infusion will take
Calculate infusion rate from volume and time
Albumin-corrected serum calcium
Calculate anion gap for metabolic acidosis
Body surface area for drug dosing
Body mass index for adults
Drip rates, mL/hr conversions, gtt/min calculations
mcg↔mg, kg↔lbs, grams↔mg, liters↔mL, °C↔°F
C1V1=C2V2, serial dilutions, reconstitution
mg/kg, mcg, units, mL conversions
Tablet calculations, dose rounding, multiple strengths
Weight-based dosing, maintenance fluids, age estimation
BMI, BSA, IBW, adjusted body weight
Creatinine clearance, eGFR estimation
QTc, MAP, CHA₂DS₂-VASc, cardiac output
Glasgow Coma Scale, Wells Score, CURB-65
Corrected calcium, sodium, anion gap
Due date, gestational age calculators
Rate to dose conversions for infusions
Vasoactive infusions, ICU medication dosing
Designed for healthcare professionals worldwide for accurate, evidence-based clinical calculations
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Regular updates to reflect current clinical guidelines and best practices from leading medical institutions. See our Editorial Policy for review process
From IV fluids and dosing to renal function and cardiology—we cover the calculations you need in clinical practice
Master formulas with detailed explanations and test your knowledge with our interactive quiz system