🧪 Free eGFR Calculator for Kidney Function | 2025 Update 🧪
Instantly assess your kidney health with our accurate eGFR calculator tool
eGFR Calculator
Use our free eGFR calculator to estimate your kidney function based on your serum creatinine levels, age, gender, and race.
Your eGFR Result
Your estimated Glomerular Filtration Rate (eGFR) is: 0 mL/min/1.73m²
Note: This eGFR calculator provides an estimate only. Always consult with your healthcare provider for medical advice.
What is eGFR?
The estimated Glomerular Filtration Rate (eGFR) is a key measure of kidney function. It calculates how well your kidneys are filtering waste from your blood. Our eGFR calculator uses the latest 2025 CKD-EPI formula to provide accurate results.
Your eGFR number helps healthcare providers:
- Detect early kidney damage
- Monitor existing kidney disease
- Determine the stage of chronic kidney disease (CKD)
- Guide treatment decisions
How the eGFR Calculator Works
This eGFR calculator uses your serum creatinine level along with your age, gender, and race to estimate your kidney function. The calculation is based on the CKD-EPI equation, which is the most accurate formula currently available.
For comparison with other tools, you can check the National Kidney Foundation’s GFR calculator or the MDRD GFR equation at MDCalc.
Why eGFR Matters for Your Health
Monitoring your kidney function with an eGFR calculator is crucial because kidney disease often has no symptoms in its early stages. By the time symptoms appear, significant damage may have already occurred.
eGFR Stages and What They Mean
Chronic Kidney Disease (CKD) is classified into five stages based on eGFR results:
- Stage 1 (eGFR ≥90): Normal or high kidney function with some signs of kidney damage
- Stage 2 (eGFR 60-89): Mildly reduced kidney function with kidney damage
- Stage 3a (eGFR 45-59): Mild to moderate loss of kidney function
- Stage 3b (eGFR 30-44): Moderate to severe loss of kidney function
- Stage 4 (eGFR 15-29): Severe loss of kidney function
- Stage 5 (eGFR <15): Kidney failure (end-stage renal disease)
Early Detection Saves Kidneys!
Regular eGFR testing can catch kidney problems early when they’re most treatable. Use our calculator regularly if you have risk factors like diabetes, high blood pressure, or a family history of kidney disease.
How to Improve Your Kidney Health
If your eGFR calculator results show reduced kidney function, these strategies can help protect your kidneys:
Dietary Changes
Eating a kidney-friendly diet can slow CKD progression. Focus on:
- Reducing sodium intake
- Choosing lean proteins
- Limiting phosphorus and potassium if recommended
- Staying hydrated with water
Lifestyle Modifications
Healthy habits support kidney function:
- Maintain a healthy weight
- Exercise regularly
- Control blood pressure
- Manage blood sugar if diabetic
- Avoid smoking and limit alcohol
Medical Management
Work with your healthcare provider to:
- Monitor kidney function regularly
- Adjust medications as needed
- Address underlying conditions
- Consider supplements if deficient
For more health tools, check out our Pregnancy Tracker, Pregnancy Diet Guide, and Medication Reminder App.
Frequently Asked Questions
How often should I check my eGFR?
If you have risk factors for kidney disease, annual testing is recommended. Those with known CKD may need testing every 3-6 months.
Can my eGFR improve?
While eGFR typically declines with age, addressing underlying causes (like controlling diabetes or blood pressure) may stabilize or slightly improve your number.
What’s the difference between eGFR and creatinine?
Creatinine is a waste product measured in your blood. eGFR uses creatinine along with other factors to estimate your actual kidney function.
Are there other calculators I should know about?
Yes! We offer various health calculators including a Lucky Mobile Number Calculator, Pet Insurance Calculator, and Cathay Pacific Miles Calculator.