Medical

Body surface area, kidney function, arterial pressure, IV drip rate and paediatric doses.

Calculation aids only. They do not replace clinical judgement or the drug reference. Verify every dose before using it on a patient.

• Body Surface Area CalculatorCalculate body surface area with the Mosteller, Du Bois, Haycock and Gehan formulas, plus the total dose when a dose is given per square metre.
• eGFR Calculator (CKD-EPI)Estimate glomerular filtration rate with the CKD-EPI 2021 equation from creatinine, age and sex, with the chronic kidney disease stage.
• Creatinine Clearance Calculator (Cockcroft-Gault)Estimate creatinine clearance in mL/min with the Cockcroft-Gault equation from age, weight and creatinine, the traditional basis for drug dose adjustment.
• Mean Arterial Pressure CalculatorCalculate mean arterial pressure and pulse pressure from systolic and diastolic readings, with the blood pressure category.
• IV Drip Rate CalculatorCalculate an IV infusion rate in mL/hour and drops per minute from the volume, the time and the drop factor of the giving set.
• Paediatric Weight-Based Dose CalculatorWork out the daily dose, the single dose and the liquid volume from a child’s weight, the mg/kg dose and the number of doses, with the maximum applied.
• Corrected QT Interval Calculator (QTc)Correct the QT interval for heart rate with the Bazett, Fridericia, Framingham and Hodges formulas and compare it with male and female limits.