Calculated Creatinine Clearance
Use this free calculated creatinine clearance to estimate creatinine clearance with the Cockcroft-Gault equation.
Health information notice: Results are estimates based on general formulas and may not reflect individual circumstances. This tool is not a diagnosis or substitute for personalized advice from a qualified healthcare professional.
How the calculated creatinine clearance works
CrCl = (140 − age) × weight (kg) ÷ (72 × serum creatinine) × 0.85 if female. It is used to help adjust some medicine doses. Clinicians may use adjusted weight.
Frequently asked questions
Is this a diagnosis?
No. It is an estimate used by clinicians; do not change medicines based on it. Ask your doctor or pharmacist.
Results are estimates for general information only. They are not a substitute for professional advice where applicable. Found a mistake? Report an error.