Creatinine Clearance Calculator
Cockcroft-Gault kidney function.
Enter your values
ⓘ Live results
Results
- Creatinine clearance
- 70.4 mL/min
- Kidney function stage
- Mildly reduced
- Dose adjustment likely?
- Usually not
- Serum creatinine
- 1.2 mg/dL
Quick answer
Cockcroft-Gault estimates creatinine clearance from age, weight, sex and serum creatinine, and is still used for renal drug dosing.
CrCl = ((140 − age) × kg × F) / (72 × SCr)
How to use the Creatinine Clearance Calculator
- 1Enter age and body weight.
- 2Enter serum creatinine in mg/dL.
- 3Select sex for the correction factor.
Worked example
Using the values the calculator loads with:
Inputs
- Age62 years
- Weight78 kg
- Serum creatinine1.2 mg/dL
- SexMale
Results
- Creatinine clearance70.4 mL/min
- Kidney function stageMildly reduced
- Dose adjustment likely?Usually not
- Serum creatinine1.2 mg/dL
Frequently asked questions
Cockcroft-Gault or eGFR?
Drug labels are usually based on Cockcroft-Gault; eGFR is used for CKD staging.
Which weight should I use?
Ideal or adjusted body weight in obesity — actual weight overestimates clearance.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.