🫘 Creatinine Clearance
Kidney function using Cockcroft-Gault formula
About this calculator
Creatinine clearance estimates how well the kidneys filter blood and guides dosing of renally cleared drugs. Enter age, weight, sex, and serum creatinine; the calculator uses the Cockcroft-Gault equation: 140 minus age, times weight in kilograms, times 0.85 if female, divided by 72 times serum creatinine. The result in mL/min feeds directly into dose adjustments. For educational purposes only — always verify with clinical protocols.
Tip: Cockcroft-Gault is less reliable in obesity, the elderly, and rapidly changing kidney function — confirm with measured clearance when the result drives a critical dosing decision.