Creatinine Clearance: Male, Age 50, 70 kg, Cr 1.0
A 50-year-old male weighing 70 kg with serum creatinine 1.0 mg/dL has an estimated creatinine clearance of approximately 80 mL/min.
How to use this tool
- Enter age, weight, serum creatinine and sex in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your creatinine clearance and the full breakdown beneath it.
The Cockcroft-Gault equation for a 50-year-old 70 kg male with creatinine of 1.0 yields a clearance of roughly 80 mL/min.
Frequently asked questions
- Which weight should I use?
- Use actual body weight if it is at or below ideal body weight. For obese patients, adjusted body weight (ABW) is often preferred; consult a pharmacist or physician for dosing decisions.
- How does CrCl differ from eGFR?
- Both estimate kidney function, but the CKD-EPI eGFR is normalised to 1.73 m² BSA and is preferred for CKD staging. CrCl from Cockcroft-Gault is preferred for drug dosing because most clinical trials used it to define dosing thresholds.