Nephrology & Acid-Base Clinical Calculators
Nephrology relies heavily on precise mathematical formulas to estimate glomerular filtration, evaluate complex acid-base derangements, and manage life-threatening electrolyte imbalances. The MedCalc Nephrology Hub provides nephrologists, hospitalists, and critical care teams with immediate, 100% offline access to these essential quantitative algorithms.
From predicting dialysis progression via the Kidney Failure Risk Equation (KFRE) to analyzing mixed metabolic acidosis using Winters’ Formula and the Delta Gap, these zero-latency tools ensure uncompromised clinical accuracy at the bedside. All formulas are rigorously aligned with current guidelines from KDIGO (Kidney Disease: Improving Global Outcomes) and the National Kidney Foundation (NKF).
Renal Function & CKD Staging
💧 eGFR Calculator (CKD-EPI)
Estimate GFR using the modern CKD-EPI equation.
💧 eGFR Calculator (MDRD)
Estimate GFR using the classic MDRD equation.
💧 Creatinine Clearance Calculator
Calculate CrCl using the Cockcroft-Gault formula.
💧 KDIGO Classification Tool
Stage chronic kidney disease based on GFR and albuminuria.
💧 KFRE Risk Calculator
Kidney Failure Risk Equation for progression to dialysis.
Acute Kidney Injury (AKI) Evaluation
💧 FENa Calculator
Determine Fractional Excretion of Sodium for AKI.
💧 FEUrea Calculator
Determine Fractional Excretion of Urea for AKI on diuretics.
💧 Renal Failure Index (RFI)
Differentiate prerenal vs intrinsic acute renal failure.
💧 AKIN Criteria Staging
Acute Kidney Injury Network staging system.
💧 RIFLE Criteria Tool
Classify acute kidney injury severity and progression.
Electrolytes & Fluid Management
💧 Free Water Deficit Calculator
Calculate fluid deficit in hypernatremic patients.
💧 Sodium Correction Calculator
Correct serum sodium for severe hyperglycemia.
💧 Corrected Calcium Calculator
Correct serum calcium levels for hypoalbuminemia.
💧 Calcium Correction Calculator
Adjust total calcium levels for albumin.
Acid-Base Disorders & Osmolality
💧 Winters’ Formula Calculator
Calculate expected pCO2 compensation in metabolic acidosis.
💧 Delta Gap Calculator
Evaluate complex mixed acid-base disorders.
💧 Osmolal Gap Calculator
Calculate serum osmolal gap for toxic ingestions.
💧 Urinary Anion Gap Calculator
Evaluate normal anion gap metabolic acidosis.