Creatinine Clearance Calculator (Cockcroft-Gault)
Estimate creatinine clearance / GFR with the Cockcroft-Gault equation from age, weight and serum creatinine. Education/reference only.
What Is the Creatinine Clearance Calculator (Cockcroft-Gault)?
The Creatinine Clearance Calculator estimates kidney function (CrCl, an estimate of GFR) using the Cockcroft-Gault equation from age, weight, serum creatinine and sex. It's commonly referenced for renal drug dosing. This is a reference and education tool only and must not be used for real-world clinical decisions — always confirm with a licensed clinician, the drug label and your institution's approved protocols.
How It Works
Enter age, weight, serum creatinine and tick Female if applicable; the estimated creatinine clearance appears instantly.
When to Use It
As a study/reference aid for the Cockcroft-Gault equation. Not for real renal dosing — always confirm with a clinician and validated tools.
Frequently Asked Questions
- What's the equation?
- CrCl = ((140 − age) × weight kg) ÷ (72 × serum creatinine mg/dL), × 0.85 for females. It uses actual body weight by default.
- Is this clinically valid?
- It reproduces a well-known formula for education, but it isn't a substitute for clinical judgment or validated calculators. Do not use for real dosing.
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