Creatinine Clearance Calculator
Estimate kidney function using the Cockcroft-Gault formula.
years
kg
mg/dL
How it works
Cockcroft-Gault: (140 − age) × weight ÷ (72 × serum creatinine), multiplied by 0.85 for women. It is an estimate only. Lab results and medication dosing must be interpreted by a doctor. Example: with the default values, estimated clearance (ml/min) comes to 92.4.
FAQ
Is this calculator free?
Yes. No signup is needed and nothing you enter is stored.
Is the result exact?
Results are rounded for display. For financial, medical, or legal decisions, confirm with a professional.
Do my numbers leave my device?
No. The calculation runs in your browser.