Creatinine Clearance Calculator — Estimate Kidney Function (GFR)

Creatinine Clearance Calculator

Calculate creatinine clearance and estimated glomerular filtration rate (eGFR) to assess kidney function. Based on serum creatinine, age, weight, and gender using the Cockcroft-Gault formula.

Step 1: Patient Information

About Creatinine Clearance

Creatinine clearance estimates the glomerular filtration rate (GFR), which measures how well your kidneys are filtering waste from your blood. Normal values range from 90-120 mL/min.

Step 2: Laboratory Values

Important Note

This calculator provides an estimate of kidney function. Always consult with a healthcare professional for proper diagnosis and treatment. Results are based on the Cockcroft-Gault formula.

Kidney Function Results

Summary
Kidney Disease Stages
Calculation Details

Estimated Creatinine Clearance (CrCl)

95.8 mL/min
Stage: Normal Kidney Function
Estimated GFR (eGFR)
96 mL/min/1.73m²
Body Surface Area
1.85 m²
Serum Creatinine
1.0 mg/dL
Patient Age & Gender
45 y/o Male

Chronic Kidney Disease (CKD) Stages

CKD Stage GFR Range (mL/min/1.73m²) Kidney Function Description

Calculation Formula & Details

Cockcroft-Gault Formula

For males: CrCl = [(140 – age) × weight] / (72 × serum creatinine)
For females: CrCl = [(140 – age) × weight] / (72 × serum creatinine) × 0.85

BSA-adjusted CrCl = CrCl × (1.73 / BSA)
BSA is calculated using the Du Bois formula: BSA = 0.007184 × height0.725 × weight0.425

Factors Affecting Creatinine Levels

Muscle Mass
Higher mass = higher creatinine
Age
GFR decreases with age
Diet
High protein increases creatinine
Medications
Some drugs affect creatinine

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Medical Disclaimer

This calculator is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

Consult a Healthcare Professional