GFR Calculator

Estimate Glomerular Filtration Rate for kidney function

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Written by the EachTools Team

Last updated: January 2026

How GFR Is Calculated

Glomerular Filtration Rate estimates kidney function using serum creatinine, age, gender, and race. A normal GFR is above 90 mL/min.

CKD-EPI equation (simplified):
GFR varies by creatinine level, age, gender, and race category

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