GFR Calculator
Clinicians stage kidney function G1–G5. Compute eGFR from routine labs with the current (2021) race-free equation.
Estimated GFR
88.9 mL/min/1.73m²
- CKD stage
- G2 — mild
Screening tool only — interpretation belongs to your clinician.
How the GFR Calculator works
The calculation follows the standard method used across the US — no shortcuts, no hidden assumptions. Here is exactly what happens behind the scenes:
Frequently Asked Questions
How does the GFR Calculator work?
Enter your numbers above and results update instantly using standard formulas, computed entirely on your device.
Is the GFR Calculator free to use?
Yes — completely free with no signup required, and it works on phones, tablets, and desktops.
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