GFR Calculator (CKD-EPI 2021)
Estimate your glomerular filtration rate (GFR) a measure of kidney function using the race-neutral CKD-EPI 2021 equation.
Enter your details
US labs report creatinine in mg/dL.
Your results
- CKD stage
- G2 Mild decrease
GFR is a screening tool. Always interpret results with a clinician albuminuria and trends matter as much as the number.
What is GFR?
GFR is a measure of how well your kidneys filter waste. A normal adult GFR is roughly 90 mL/min/1.73m² or higher.
The CKD-EPI 2021 equation removed the race coefficient previously used, providing a more equitable estimate.
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Frequently Asked Questions
Should I be worried about a low GFR?
A single low reading is not a diagnosis. Talk to a clinician about a repeat test, urine albumin, and trend over time.