Method
The calculator uses the CKD-EPI 2021 creatinine equation without a race coefficient. Creatinine in umol/L is converted to mg/dL before calculation.
Example
A 50-year-old female with serum creatinine of 0.9 mg/dL produces an eGFR estimate from the CKD-EPI 2021 equation. The result should be read with the lab report and clinical context.
Common mistakes
Use the correct creatinine unit. Do not use eGFR calculators for rapidly changing kidney function, acute illness or medication dosing without clinical guidance.
Limitations
eGFR should be interpreted with clinical context and repeat testing where appropriate. It is not a diagnosis of chronic kidney disease by itself.
References
- National Kidney Foundation: CKD-EPI equation information, accessed 2026-05-17.
Last reviewed: 2026-05-17