Health & Fitness
eGFR CKD-EPI 2021 Calculator
Estimate glomerular filtration rate using the race-free CKD-EPI 2021 creatinine equation.
Preparing your result…
What this calculator does
Calculates eGFR CKD-EPI 2021 Calculator using the formula verified against the cited source.
What your result means
An estimate from the inputs you enter, within the scope stated below — not advice.
Formula
eGFR = 142 × min(Scr÷κ,1)^α × max(Scr÷κ,1)^−1.200 × 0.9938^age × 1.012 [if female]
The step-by-step working for your own numbers appears with the result above and in the PDF report.
Frequently asked questions
Symbols and assumptions
- Inputs
- The values entered in the fields above
- • 2021 race-free CKD-EPI creatinine eGFR=142×min(Scr/κ,1)^α×max(Scr/κ,1)^−1.200×0.9938^age×1.012 if female; κ=0.7 female/0.9 male, α=−0.241 female/−0.302 male. Scr mg/dL; output mL/min/1.73 m².
Sources and review
Reviewed 2026-10-18 · Next review 2027-04-18
- • Adults≥18, standardized creatinine and appropriate steady-state context. Convert µmol/L to mg/dL by /88.4. No race multiplier. Indexed eGFR is not automatically drug-dosing clearance; deindexing requires BSA and clinical context.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
Quick reference
| Scenario | Serum creatinine (mg/dL) | Age (years) | Estimated GFR |
|---|---|---|---|
| Worked example | 1 | 50 | 91.6915 mL/min/1.73m² |
| Half the amounts | 0.5 | 25 | 145.1628 mL/min/1.73m² |
| Double the amounts | 2 | 100 | 29.2444 mL/min/1.73m² |
Need the full picture? Get the detailed PDF report with charts, tables, formulas and working steps.
Reviewed 2026-10-18 · Next review 2027-04-18
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