Creatinine Clearance Calculator (Cockcroft–Gault)
The 1976 CrCl estimate that drug dosing references still demand — with the weight-choice subtlety handled.
eGFR didn't retire this: DOACs, many antibiotics and chemotherapy protocols specify Cockcroft–Gault because that's what their trials used. The weight question is the classic pitfall — actual weight overestimates clearance in obesity (pharmacists use IBW or adjusted BW there), and unstable creatinine invalidates any estimate. Protocol's stated weight wins.
Formula
Reference aid for healthcare professionals only. Every result must be independently verified before clinical use. Never use this tool for self-medication or to replace clinical judgement.
The 1976 CrCl estimate that drug dosing references still demand — with the weight-choice subtlety handled. The Creatinine Clearance Calculator (Cockcroft–Gault) is a free, private creatinine clearance tool — every result computes instantly in your browser with no sign-up and no data upload.
About Creatinine Clearance Calculator (Cockcroft–Gault)
eGFR didn't retire this: DOACs, many antibiotics and chemotherapy protocols specify Cockcroft–Gault because that's what their trials used. It applies CrCl = (140 − age) × weight ÷ (72 × Scr) × 0.85 if female. Use the Creatinine Clearance Calculator (Cockcroft–Gault) to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use Creatinine Clearance Calculator (Cockcroft–Gault)
- 1Enter your details in the Creatinine Clearance Calculator (Cockcroft–Gault) input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use Creatinine Clearance Calculator (Cockcroft–Gault)?
- ✓Instant creatinine clearance result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (Cockcroft DW & Gault MH, Nephron 1976;16:31-41)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the Creatinine Clearance Calculator (Cockcroft–Gault) work?+
eGFR didn't retire this: DOACs, many antibiotics and chemotherapy protocols specify Cockcroft–Gault because that's what their trials used. The calculation uses the formula: CrCl = (140 − age) × weight ÷ (72 × Scr) × 0.85 if female. Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the Creatinine Clearance Calculator (Cockcroft–Gault) accurate, and what is it based on?+
The method is traceable to authoritative sources: Cockcroft DW & Gault MH, Nephron 1976;16:31-41. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the Creatinine Clearance Calculator (Cockcroft–Gault) free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This is a reference aid for healthcare professionals and must be independently verified. It is not for self-diagnosis or self-medication.
What can I use the Creatinine Clearance Calculator (Cockcroft–Gault) for?+
It's commonly used for creatinine clearance, cockcroft gault, crcl calculator. The 1976 CrCl estimate that drug dosing references still demand — with the weight-choice subtlety handled.
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