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Local · educational estimate

2021 CKD-EPI eGFR calculator

18–120

Used only for published κ, α, and female coefficients; it is not gender identity.

mg/dL

0.2–20 mg/dL or 17.68–1,768 µmol/L.

mg/dL · µmol/L

Source and assumptions

https://www.niddk.nih.gov/research-funding/research-programs/kidney-clinical-research-epidemiology/laboratory/glomerular-filtration-rate-equations/adults · https://www.kidney.org/how-to-classify-ckd

An adult estimate, not measured GFR or a CKD diagnosis; no MDRD, race coefficient, medication dosing, pediatric, or transplant decision.

All inputs and results stay in current browser memory and are not uploaded or stored.

GA4 may receive only tool, category, and locale—not health values, answers, scores, bands, units, or results.

Search and use guide

2021 CKD-EPI eGFR calculator

Calculate race-free 2021 CKD-EPI eGFR from adult serum creatinine, age, and the equation sex coefficient. privacy-first-browser-tooling

Who it helps

  • Show whole mL/min/1.73 m², a G1–G5 reference category, and restrained follow-up context; it is educational and does not diagnose CKD.
  • 2021 CKD-EPI creatinine: eGFR = 142 × min(SCr/κ,1)^α × max(SCr/κ,1)^−1.200 × 0.9938^age × 1.012 if female; κ/α are 0.7/−0.241 for female and 0.9/−0.302 for male, with µmol/L ÷ 88.4. This tool uses only this equation—no MDRD or race coefficient.
  • after adult age, equation sex coefficient, and standardized serum creatinine are entered, the tool shows unrounded details, whole-number eGFR, and a G category; G1/G2 still cannot confirm or exclude CKD alone.

What you can enter

  • after adult age, equation sex coefficient, and standardized serum creatinine are entered, the tool shows unrounded details, whole-number eGFR, and a G category; G1/G2 still cannot confirm or exclude CKD alone.
  • 2021 CKD-EPI creatinine: eGFR = 142 × min(SCr/κ,1)^α × max(SCr/κ,1)^−1.200 × 0.9938^age × 1.012 if female; κ/α are 0.7/−

How to read results

2021 CKD-EPI creatinine: eGFR = 142 × min(SCr/κ,1)^α × max(SCr/κ,1)^−1.200 × 0.9938^age × 1.012 if female; κ/α are 0.7/−0.241 for female and 0.9/−0.302 for male, with µmol/L ÷ 88.4. This tool uses only this equation—no MDRD or race coefficient. privacy-first-browser-tooling

Data and privacy

GoGo Tools records analytics by tool slug only and does not include your input values. privacy-safe-analytics-only

FAQ

2021 CKD-EPI eGFR calculator：Which data are required?

Enter age 18–120, the equation sex coefficient, and standardized serum creatinine from 0.2–20 mg/dL or 17.68–1,768 µmol/L. The tool asks for no name, race, or MDRD parameter.

2021 CKD-EPI eGFR calculator：Which equation is used?

Only the race-free 2021 CKD-EPI creatinine equation is used: 142 × min(SCr/κ,1)^α × max(SCr/κ,1)^−1.200 × 0.9938^age × 1.012 if female; µmol/L is divided by 88.4 first. The result is rounded to whole mL/min/1.73 m² and given a G category.

2021 CKD-EPI eGFR calculator：Does a G category mean I have kidney disease?

No. eGFR is estimated, not measured GFR. G1/G2 alone neither confirms nor excludes CKD; duration, UACR, cystatin C, and other kidney-damage markers may matter. This tool provides no MDRD result, medication dose, pediatric or transplant decision, or diagnosis.

2021 CKD-EPI eGFR calculator：Are age and laboratory values uploaded?

No. Age, equation sex coefficient, creatinine, eGFR, G category, and reminders are calculated only in current browser memory and are not uploaded or stored. GA4 excludes every one of these health data.