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  8. Previous eGFR Calculator for Reference

Previous eGFR Calculator for Reference

NIDDK supports the National Kidney Foundation–American Society of Nephrology Task Force's recommendation to calculate estimated glomerular filtration rate (eGFR) using calculators that do not use a race coefficient.1 However, the race-free Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations may yield slightly different eGFR estimates compared to the race-based CKD-EPI equations. NIDDK is maintaining the 2009 race-based CKD-EPI creatinine calculator to enable comparison between results from the older and newer equations during the transition to the race-free equations.

2009 CKD-EPI Creatinine Calculator

The 2009 CKD-EPI creatinine equation uses serum creatinine, age, race, and sex to estimate GFR in adults ages 18 and older.2 The calculator is offered in conventional and SI units.

CKD-EPI for Adults (Conventional Units)
Enter a numeric value of at least 0.001
Enter a numeric age, 18 or over
African American?
Sex
GFR estimate (mL/min/1.73 m²)
mL/min/1.73 m²
CKD-EPI for Adults (SI Units)
Enter a numeric value of at least 0.001
Enter a numeric age, 18 or over
African American?
Sex
GFR estimate (mL/min/1.73 m²)
mL/min/1.73 m²
  • This calculator should only be used for patients 18 and older.
  • All estimating equations estimate GFR. A person’s actual GFR may be higher or lower than the estimate. GFR may be best assessed by monitoring trends over time rather than a single point estimate. Estimating equations become less accurate as GFR increases.
  • Learn about the equation used in this calculator.

References

Last Reviewed May 2024
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This content is provided as a service of the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), part of the National Institutes of Health. NIDDK translates and disseminates research findings to increase knowledge and understanding about health and disease among patients, health professionals, and the public. Content produced by NIDDK is carefully reviewed by NIDDK scientists and other experts.