What the tool does, how to run it, and what to expect from the result.
Estimate kidney function (eGFR) from serum creatinine, age and sex with the race-free CKD-EPI 2021 equation, with the matching CKD G stage. It is an estimate for general guidance and is not medical advice; talk to a professional for personal health decisions.
A quick way to understand who this helps, what it solves, and where it connects next.
People tracking fitness, nutrition, and everyday health goals.
A quick, private health estimate without an account or app install.
Short answers for the questions people usually have before trying a utility like this.
Yes. It is completely free, with no sign-up, no watermark, and no usage limits.
No. Everything runs locally in your browser, so your details never leave your device and the tool works offline.
The CKD-EPI 2021 creatinine equation, which dropped the race coefficient and is the current US standard. It is validated for adults 18 and over and is less reliable at extremes of muscle mass or in acute illness.
90 or above is G1, 60-89 G2, 45-59 G3a, 30-44 G3b, 15-29 G4 and below 15 G5. eGFR falls naturally with age, and CKD is only diagnosed with other markers or when it stays under 60 for three months. Discuss results with a clinician.
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Enter your numbers and the result updates live in your browser. Nothing is uploaded and no server is used.
Calculations run locally in your browser; nothing is uploaded. An estimate, not medical advice.