Creatinine Clearance
Calculator
Enter your details to instantly estimate your Creatinine Clearance (CrCl) using the Cockcroft-Gault formula. Understand your kidney function and discover actionable advice to manage your renal health.
Calculate Your CrCl
Estimate your kidney function and filtration rate
Select your biological sex (affects the calculation factor).
Your age in years (18 - 120).
Your current body weight.
Your blood test result for serum creatinine.
Your Estimated Creatinine Clearance
What Is Creatinine Clearance (CrCl)?
Creatinine is a waste product generated by normal muscle breakdown. Healthy kidneys filter creatinine out of your blood and excrete it through urine. The Creatinine Clearance (CrCl) rate estimates the volume of blood plasma that is cleared of creatinine per minute.
The Cockcroft-Gault equation is a standard clinical formula used to estimate this clearance. It factors in your age, weight, gender, and serum creatinine levels. Monitoring this metric is vital for detecting early signs of chronic kidney disease (CKD) and for doctors when dosing specific medications.
How to Understand Your CrCl Results
| CrCl Range (mL/min) | Kidney Function Stage | Clinical Action & Diet Focus |
|---|---|---|
| ≥ 90 | Normal or High Function | Maintain a balanced diet, stay hydrated. |
| 60 - 89 | Mildly Decreased | Monitor blood pressure, limit excess sodium. |
| 45 - 59 | Mild to Moderate Decrease | Medical evaluation, moderate protein intake. |
| 30 - 44 | Moderate to Severe Decrease | Strict renal diet, control phosphorus/potassium. |
| 15 - 29 | Severely Decreased | Nephrologist care, rigorous dietary restrictions. |
| < 15 | Kidney Failure | Preparation for dialysis or transplant. |
Blood Pressure & Sugar
Hypertension and Diabetes are the leading causes of kidney decline. Managing these conditions through a strict, tailored diet directly helps in slowing down the progression of kidney damage.
Age & Muscle Mass
Because creatinine comes from muscle breakdown, higher muscle mass produces more creatinine. Furthermore, GFR and CrCl naturally decline slightly as we age, which is factored into the calculation.
Indian Renal Diet Context
An Indian diet can be high in potassium (lentils, spinach, potatoes) and phosphorus (dairy). If your CrCl is low, these minerals need strict moderation. Techniques like 'leaching' vegetables become crucial.
Medication Dosing
Doctors frequently use the Cockcroft-Gault CrCl calculation to adjust the dosages of renally cleared medications to prevent drug toxicity in the body.
How to Support Your Renal Health
- 1Manage Blood Sugar & Pressure — For those managing diabetes or hypertension (common in India), keeping your levels strictly controlled is the #1 way to protect remaining kidney function.
- 2Monitor Sodium Intake — Excess salt spikes blood pressure and forces kidneys to work harder. Avoid processed foods, pickles (achaar), and papads. Aim for less than 2,000 mg of sodium per day.
- 3Adjust Protein Carefully — While a high-protein diet is great for weight loss, if your CrCl is low (< 60), too much protein strains the kidneys. Transition to high-quality, measured protein portions under a dietitian's guidance.
- 4Stay Properly Hydrated — Drinking enough water helps your kidneys clear sodium and toxins from the body. However, if you are in later stages of CKD, your doctor may recommend fluid restriction.
- 5Leach Your Vegetables — If advised to lower potassium, chop root vegetables (like potatoes) and boil them in a large volume of water, then discard the water before cooking. This removes excess potassium.
Manage Kidney Health With Expert Plans
A renal diet requires precision. Our certified dietitians create personalised, safe, and delicious Indian meal plans designed to control your protein, sodium, and potassium intake without compromising on taste.
Common Questions About Creatinine & Kidney Function
CrCl = [(140 - age) × weight(kg)] / (72 × Serum Creatinine). For females, the final result is multiplied by 0.85 to account for generally lower muscle mass.