Calculates CrCl according to the Cockcroft-Gault equation.
Creatinine Clearance Calculator
Cockcroft-Gault Equation for adult patients
Estimated Creatinine Clearance
0.0 mL/min
Weight used
0.0 kg
Serum creatinine used
0.00 mg/dL
Body mass index
0.0 kg/m²
Clinical note
This calculator is for educational use. Cockcroft-Gault estimates creatinine clearance and may be inaccurate in patients with unstable serum creatinine, pregnancy, amputations, unusual muscle mass, or extremes of body size.
Formula and references
CrCl = [(140 − age) × weight (kg) × sex factor] ÷ [72 × SCr (mg/dL)]
Sex factor: 1.0 for males and 0.85 for females.
- Cockcroft DW, Gault MH. Prediction of creatinine clearance from serum creatinine. Nephron. 1976;16(1):31–41.
- Creatinine conversion: 1 mg/dL ≈ 88.4 µmol/L.
- Ideal body weight uses the Devine formula.
