Onc Calcs

Glomerular Filtration Rate (GFR) Calculator

Cockcroft–Gault, MDRD (4-variable) and CKD-EPI 2009 (creatinine). Adults only. Serum creatinine in mg/dL.

Patient data

Used to calculate BSA (Mosteller) to normalize Cockcroft–Gault.

mg/dL
Results
Equation Estimate Units
Cockcroft–Gault (CrCl) — mL/min
Cockcroft–Gault (indexed to 1.73 m²)
Using Mosteller body surface area 		— mL/min/1.73 m²
MDRD-4 (IDMS) — mL/min/1.73 m²
CKD-EPI 2009 (creatinine) — mL/min/1.73 m²
Important: These equations are valid for stable kidney function in adults. Always interpret in clinical context; not for pediatric patients or rapidly changing creatinine. These values are estimates and do not replace clinical judgment.