Work out creatinine clearance (cockcroft gault) instantly with clear inputs, formula shown and shareable results.
Applies the Cockcroft-Gault equation, still the reference method for many drug dose adjustments, using age, weight, sex and serum creatinine.
Cockcroft-Gault
CrCl (mL/min) = (140 - age) x weight (kg) x 0.85 if female / (72 x serum creatinine mg/dL)
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
Actual weight in normal-weight people; many centres use ideal or adjusted body weight in obesity.
Many drug licences and renal dosing tables were derived using Cockcroft-Gault clearance, so it remains the stated basis.