Estimated glomerular filtration rate (eGFR) is a calculated value used to assess kidney function based on serum creatinine, age, and sex.

This calculator uses the CKD-EPI 2021 creatinine equation to estimate GFR in adults.

eGFR is commonly grouped into CKD stages, with higher values generally reflecting better kidney function and lower values suggesting more severe impairment.

No. Chronic kidney disease is diagnosed using eGFR together with duration, albuminuria, urinalysis, imaging, and the overall clinical picture.