General medical calculators
All 15 General medical calculators on DocMath, A–Z. All specialties
- Anion gap (± albumin correction)Metabolic acidosis work-up.
- Body Mass IndexWeight category.
- Body Surface Area (Mosteller)Drug dosing, indexing.
- Calcium corrected for albuminTotal calcium adjusted for hypo-/hyperalbuminemia.
- Corrected QT interval (Bazett, Fridericia)Drug safety / arrhythmia risk.
- Creatinine clearance (Cockcroft-Gault)Renal drug dosing.
- eGFR — CKD-EPI 2021 (race-free)Kidney function staging.
- Fractional excretion of sodium (FENa)Prerenal vs intrinsic acute kidney injury.
- Free water deficitHypernatremia correction planning.
- Ideal & adjusted body weight (Devine)Dosing weight.
- LDL cholesterol (Friedewald)Calculated LDL.
- Mean arterial pressurePerfusion pressure.
- Serum osmolality (calculated) & osmolal gapToxic alcohol / hyponatremia work-up.
- Sodium corrected for hyperglycemiaTrue sodium in hyperglycemia.
- Winters' formulaExpected respiratory compensation in metabolic acidosis.