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.
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Calculate military body fat percentage and tape compliance according to official U.S. Army AR 600-9 standards.
Body Type & Shape Calculator
Discover your body silhouette archetype (Hourglass, Pear, Spoon, Rectangle, Inverted Triangle).
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Calculate exactly how much weight you are carrying above your healthy BMI threshold.
BAC (Blood Alcohol) Calculator
Estimate your Blood Alcohol Concentration (BAC) and sobriety timeline using the Widmark Formula.
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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.