GFR Calculator
Calculate your estimated Glomerular Filtration Rate (eGFR) to assess kidney function using the latest CKD-EPI 2021 equation.
Patient Details
Obtained from your recent blood test lab results.
Enter your age, gender, and serum creatinine level to estimate your kidney function.
Clinical Note
This calculator uses the 2021 CKD-EPI Creatinine Equation, which is recommended by the National Kidney Foundation. It does not include a race coefficient, in alignment with current medical guidelines.
Related Calculators & Companion Tools
Complementary tools designed to pair with the eGFR Kidney Function Calculator. Compare formulas and verify your projections.
Army Body Fat Calculator
Complementary specialized calculation tool to expand your analysis.
Body Type & Shape Calculator
Complementary specialized calculation tool to expand your analysis.
BAC (Blood Alcohol) Calculator
Complementary specialized calculation tool to expand your analysis.
Excess Weight Calculator
Complementary specialized calculation tool to expand your analysis.
Was this calculator accurate & helpful?
Explore More Calculators
Discover our complete collection of free financial, everyday utility, and health calculators.
Health & Medical
- -BMI Calculator
- -Body Fat Calculator
- -Ideal Weight Calculator
- -Healthy Weight Range Calculator
- -Lean Body Mass Calculator
- -Army Body Fat Calculator
- -Body Type & Shape Calculator
- -Waist-to-Hip Ratio (WHR) Calculator
- -Body Surface Area (BSA) Calculator
- -Excess Weight Calculator
- eGFR Kidney Function Calculator
- -BAC (Blood Alcohol) Calculator
- -Blood Pressure Analyzer
- -A1C & Average Glucose Calculator
- -Sleep Cycle & Wake-Up Calculator
Nutrition & Diet
Fitness & Sports
Pregnancy & Women's Health
Finance & Money
- -Mortgage Calculator
- -Auto Loan Calculator
- -Retirement Calculator
- -401(k) Retirement Growth Calculator
- -Compound Interest Calculator
- -ROI (Return on Investment) Calculator
- -Loan & Amortization Calculator
- -Credit Card Payoff Calculator
- -Debt-to-Income (DTI) Calculator
- -Savings & Savings Bond Calculator
- -Salary & Wage Calculator
- -Paycheck & Take-Home Tax Calculator
- -US Sales Tax Calculator
- -Student Loan Calculator
- -Rent vs. Buy Calculator
- -Hourly Wage & Overtime Calculator
- -Inflation & Purchasing Power Calculator
Interactive Google Health Web Stories & Visual Guides
Explore fast, mobile-first visual stories on BMI, Calorie Deficit, TDEE, Macros, Sleep Cycles, and Healthy Habits.
Evidence-Based Clinical Formulations
All biometrics, body composition, and caloric computations adhere to the Mifflin-St Jeor, Harris-Benedict, and U.S. Navy standards referenced by the Centers for Disease Control and Prevention.
Cardiovascular & Nutrition Tips
Target heart rates, daily sodium ceilings, and macronutrient distributions align with the American Heart Association (AHA) and USDA Dietary Guidelines for Americans.
Practical Health Takeaways
Pair your calculation with structured sleep (7-9 hrs), balanced hydration (half body weight in oz), and a 500 kcal sustainable deficit for healthy body composition management.