Estimate how well your kidneys filter from the serum creatinine on your report, your age and sex. CKD-EPI 2021 equation, adults only.
Free to useNo account to get startedCKD-EPI 2021
eGFR stages (KDIGO)
What each range means
Stage
eGFR
Kidney function
G1
90 or above
Normal or high
G2
60 to 89
Mildly decreased
G3a
45 to 59
Mildly to moderately decreased
G3b
30 to 44
Moderately to severely decreased
G4
15 to 29
Severely decreased
G5
below 15
Kidney failure
eGFR is an estimate. It reads wrong in pregnancy, at extremes of muscle mass (body builders, amputees, very thin or bed-bound people), after a large meat meal, with creatine supplements and when kidney function is changing quickly. Not for children. Treatment and medicine doses are a doctor's decision.
Need help understanding your result?
A doctor can discuss your symptoms and help you decide what to do next.
90 or above is normal. 60 to 89 is mildly reduced and common with age; it counts as kidney disease only with another sign such as protein in the urine. Below 60 for 3 months or more is chronic kidney disease.
How is eGFR calculated?
From serum creatinine, age and sex using the CKD-EPI 2021 equation, the race-free formula recommended by KDIGO. It estimates filtration per 1.73 m² of body surface.
What creatinine level is normal?
Roughly 0.7 to 1.3 mg/dL in men and 0.6 to 1.1 mg/dL in women, but creatinine depends on muscle mass, which is why eGFR is a better guide than creatinine alone.
Can eGFR improve?
A low eGFR from dehydration, a recent infection or some medicines often recovers once the cause is treated. In chronic kidney disease, controlling blood pressure and sugar slows the decline.
How do I convert creatinine from µmol/L to mg/dL?
Divide µmol/L by 88.4. For example, 97 µmol/L is 1.1 mg/dL. This calculator does the conversion when µmol/L is selected.
Which test do I need for eGFR?
A serum creatinine or a kidney function test (urea, creatinine, uric acid and electrolytes). Most Indian labs print the eGFR on the report.
