What is a normal eGFR?

90 or above is normal. 60 to 89 is mildly reduced, which is common with age and counts as kidney disease only with other signs such as protein in the urine. Below 60 for three months or more is chronic kidney disease.

How is eGFR calculated?

From your blood creatinine, age and sex, with an equation. Since 2021 many labs use the CKD-EPI 2021 equation, which does not use race. This calculator uses it too.

Why is my eGFR different from my lab’s?

Your lab may use an older equation, print anything above 60 or 90 simply as "> 60", or use a cystatin C test. Small differences are normal. A falling trend over several tests matters more than one number.

Can creatine or a big steak lower my eGFR?

They can make it look lower. Creatine supplements and a large meat meal raise blood creatinine for a while, and the equation reads that as less filtering. So does a lot of muscle. Tell your doctor if you take creatine.

eGFR calculator (CKD-EPI 2021) and normal range

Short answer: The healthy eGFR range HealthOS uses is ≥ 90 mL/min/1.73m² for adults. Many labs print a wider reference range, so read your value against the one on your report too.

Free calculator

eGFR calculator (CKD-EPI 2021)

CKD-EPI 2021 creatinine equation (no race term)

Sources: Inker LA, Eneanya ND, Coresh J, et al. New creatinine- and cystatin C-based equations to estimate GFR without race. N Engl J Med 2021;385(19):1737-1749.

Creatinine (blood)

mg/dL

Serum creatinine from your kidney panel

Age

years

In years

Sex

The equation uses it because muscle mass affects creatinine

Your result

Enter the numbers from your lab report to see your result.

For adults (18 and over). Less reliable in pregnancy, with very high or very low muscle mass, during a sudden illness, or after creatine supplements or a large meat meal, which raise creatinine.

Worked out in your browser. Nothing you type is sent or saved.

A pointer, not a diagnosis. Talk to a doctor about your result, and sooner if you feel unwell.

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Estimated kidney filtration rate — higher is better.

Normal range

Adult reference range.

Low< 60 mL/min/1.73m²
Borderline60 – 90 mL/min/1.73m²
Optimal≥ 90 mL/min/1.73m²

0130 mL/min/1.73m²

What it measures

An estimate of how much blood your kidneys filter per minute. The headline number for kidney health.

What moves it

Age, creatinine, hydration and chronic conditions.

How to bring it into range

Blood-pressure and blood-sugar control, hydration, avoiding NSAID overuse.

How fast it responds

Slowly — months.

Also reported as: estimated gfr · gfr

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Common questions

What is a normal eGFR?: 90 or above is normal. 60 to 89 is mildly reduced, which is common with age and counts as kidney disease only with other signs such as protein in the urine. Below 60 for three months or more is chronic kidney disease.
How is eGFR calculated?: From your blood creatinine, age and sex, with an equation. Since 2021 many labs use the CKD-EPI 2021 equation, which does not use race. This calculator uses it too.
Why is my eGFR different from my lab’s?: Your lab may use an older equation, print anything above 60 or 90 simply as "> 60", or use a cystatin C test. Small differences are normal. A falling trend over several tests matters more than one number.
Can creatine or a big steak lower my eGFR?: They can make it look lower. Creatine supplements and a large meat meal raise blood creatinine for a while, and the equation reads that as less filtering. So does a lot of muscle. Tell your doctor if you take creatine.

Related markers

Serum Creatinine Blood Urea Nitrogen

More in Kidney

Serum Creatinine Blood Urea Nitrogen Blood Urea Uric acid Sodium Potassium Chloride

Reference ranges are general-population guidance compiled from common clinical laboratories, not a diagnosis. Lab-to-lab ranges differ. Always read your results with your doctor.