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eGFR Calculator — Kidney Function

Private, client-side calculation

eGFR Calculator

Estimate kidney filtration using serum creatinine, age and sex with the 2021 CKD-EPI creatinine equation.

µmol/L
yrs
STEP 01🧪
Enter creatinine
Use serum creatinine from the lab in µmol/L or mg/dL.
STEP 02👤
Add age and sex
The CKD-EPI equation adjusts for age and sex-specific creatinine constants.
STEP 03🫘
Review kidney stage
See eGFR, KDIGO G category and an interactive creatinine simulator.
eGFR
Enter values
🫘
G Category
KDIGO G band
📊
Creatinine
µmol/L
🧪
Age
years
👤
Equation
2021
CKD-EPI creatinine
⚕️
📸 Your result card is ready
Download a snapshot of your result, share it, or send the link. This tool provides estimates only and is not a substitute for professional medical advice.
eGFR Inputs
µmol/L
yrs
Kidney Function Zone
🫘

Hit Calculate to see your result

Kidney Metrics
🧮

Metrics appear after calculation

✦ Result Explainer

Your explanation appears here

▣ Clinical Checkpoints
📋

Your checklist appears after calculation

◎ What If Simulator

Test how a different creatinine value changes eGFR without changing your main result.

Calculate your baseline first

● Ask About Your Result
Calculate first, then ask about eGFR, CKD-EPI or kidney function categories.
Frequently Asked Questions

It uses the 2021 CKD-EPI creatinine equation, which estimates glomerular filtration rate from serum creatinine, age and sex without a race coefficient.

This tool shows KDIGO G categories: G1 ≥90, G2 60–89, G3a 45–59, G3b 30–44, G4 15–29 and G5 <15 mL/min/1.73m².

No. A single eGFR is a screening and staging aid. Diagnosis usually requires persistence over time, urine albumin, urinalysis, imaging or other clinical information interpreted by a qualified clinician.

Medical & Calculation Disclaimer

Results are estimates generated locally in your browser using the 2021 CKD-EPI creatinine equation. This tool is for informational and educational purposes only, not medical advice, diagnosis, triage or treatment guidance. Creatinine-based eGFR can be inaccurate in unusual muscle mass, acute kidney injury, pregnancy, dialysis, extremes of diet or rapidly changing kidney function. VisionVix accepts no liability for decisions based on this output.

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