eGFR Calculator
Estimate eGFR with CKD-EPI creatinine equation for study purposes only.
Use the calculator below, then review the formula, a numeric example, and the reference table to understand how the egfr calculator (educational) result is produced.
Educational tool only. It does not replace advice from a licensed clinician, dietitian, or exercise physiologist.
Calculator inputs
Result
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What is this calculator?
Estimate eGFR with CKD-EPI creatinine equation for study purposes only. The formula, a worked example, and a reference table are below. Results are for education only, not medical advice.
How it works
CKD-EPI creatinine (2009) equation as implemented for education; includes age, sex, and serum creatinine in mg/dL.
Example
Enter typical labs in the tool–outputs mL/min/1.73m² estimate for study comparison only.
Reference Table
| Value | Meaning |
|---|---|
| G1 | 90 with signs? context |
| G2 | 60–89 |
| G3a | 45–59 |
| G3b | 30–44 |
FAQ
Can I diagnose kidney disease here?
No—labs need clinical correlation and repeat testing.
Creatinine assays?
IDMS-traceable vs older methods shift results.
Acute illness?
Creatinine may spike transiently; do not over-interpret one value.
Medications?
Many drugs affect renal function; pharmacist review helps.