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Published: May 24, 2026 7:16 PM
Free eGFR Calculator – Kidney Function & GFR Estimator
Category: Web Apps
This free eGFR Calculator helps estimate kidney function using serum creatinine, age, and sex. Estimated Glomerular Filtration Rate (eGFR) is commonly used to assess kidney health and chronic kidney disease (CKD) staging. This tool is intended for educational purposes only and does not replace professional medical advice.
📈 eGFR Calculator
Kidney Function Estimator — CKD-EPI 2021 Formula
Please fill in all fields with valid values.
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mL/min/1.73m²
| Stage | eGFR Range | Description |
|---|---|---|
| G1 | ≥ 90 | Normal or high |
| G2 | 60–89 | Mildly decreased |
| G3a | 45–59 | Mild–moderate decrease |
| G3b | 30–44 | Moderate–severe decrease |
| G4 | 15–29 | Severely decreased |
| G5 | < 15 | Kidney failure |
Medical Disclaimer: This calculator uses the CKD-EPI 2021 (race-free) equation. eGFR is an estimate and should be interpreted alongside clinical context. A single eGFR reading is not sufficient for diagnosis. Always consult a qualified healthcare professional or nephrologist.
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