eGFR Kidney Function & CKD Staging Calculator (2021 CKD-EPI Refitted Formula)
Calculate Estimated Glomerular Filtration Rate (eGFR in mL/min/1.73 m²) using serum creatinine, age, and sex based on the latest 2021 NKF-ASN race-free CKD-EPI equation to determine chronic kidney disease stages (G1 to G5).
Estimated GFR (eGFR in mL/min/1.73 m²)
Calculator Inputs
Estimated GFR (eGFR in mL/min/1.73 m²)
Estimated GFR Kidney Function Visualization
This clinical calculator is for educational and screening guidance. Diagnosis of Chronic Kidney Disease (CKD) requires clinical evaluation and urine albumin checks.
This tool is a mathematical wellness and fitness estimation model for general educational guidance only. The results do not constitute medical diagnosis, clinical advice, or treatment plans. Always consult a qualified physician or certified dietitian before starting any dietary regimen, exercise program, or making health decisions.
Calculation Methodology
2021 CKD-EPI Equation: eGFR = 142 * min(Scr/κ, 1)^α * max(Scr/κ, 1)^-1.200 * 0.9938^Age * (1.012 if female). For females: κ=0.7, α=-0.241; for males: κ=0.9, α=-0.302.
Frequently Asked Questions
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