Kidney Function Calculator
Calculate estimated Glomerular Filtration Rate (eGFR) to assess kidney function. Estimate creatinine clearance and identify kidney disease stages.
Step 1: Patient Information
Understanding Kidney Function
eGFR estimates how well your kidneys filter waste. Normal eGFR is 90+ mL/min/1.73m². Lower values indicate reduced kidney function. Always consult a healthcare professional for medical advice.
Step 2: Calculation Options
Kidney Disease Stages
Stage 1: eGFR ≥90 (Normal or high)
Stage 2: eGFR 60-89 (Mildly decreased)
Stage 3: eGFR 30-59 (Moderately decreased)
Stage 4: eGFR 15-29 (Severely decreased)
Stage 5: eGFR <15 (Kidney failure)
Kidney Function Results
Estimated Glomerular Filtration Rate (eGFR)
Interpretation
Your estimated kidney function is within the normal range. Continue regular check-ups and maintain a healthy lifestyle with proper hydration and balanced diet.
Chronic Kidney Disease Stages
| Stage | eGFR Range | Kidney Function | Description | Action Required |
|---|
Kidney Function Formulas
CKD-EPI Equation
Most accurate formula for eGFR:
For women with creatinine ≤0.7: 144 × (Cr/0.7)^-0.329 × 0.993^Age
For women with creatinine >0.7: 144 × (Cr/0.7)^-1.209 × 0.993^Age
Multiply by 1.159 for Black patients
MDRD Study Equation
Older but still used:
eGFR = 175 × (Cr)^-1.154 × (Age)^-0.203
× 0.742 if female
× 1.212 if Black
Cockcroft-Gault Formula
Estimates creatinine clearance:
CrCl = [(140 – Age) × Weight] / (72 × Cr)
Multiply by 0.85 if female
Need Professional Medical Advice?
This calculator provides estimates only. For accurate diagnosis and treatment, consult with a healthcare professional or nephrologist for proper kidney function evaluation.
Consult Healthcare Provider