Free Tool
GFR Calculator
Calculate eGFR using the CKD-EPI 2021 equation
GFR Calculator
Estimated Glomerular Filtration Rate (eGFR) is used to assess kidney function and stage chronic kidney disease.
CKD-EPI 2021 equation for estimating GFR (race-free formula)
Recommended for adults with stable kidney function
CKD Stages (mL/min/1.73m²)
G1: ≥90
G2: 60-89
G3a: 45-59
G3b: 30-44
G4: 15-29
G5: <15
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