Medical calculators

Clinical scores and formulas — each with its primary source.

• CHA₂DS₂-VAStroke risk in atrial fibrillation (ESC 2024, sex removed)
• HAS-BLEDMajor bleeding risk on anticoagulation in atrial fibrillation
• HEART Score6-week MACE risk in chest pain at presentation
• eGFR (CKD-EPI 2021)Estimated glomerular filtration rate, race-free equation
• Creatinine clearance (Cockcroft-Gault)CrCl estimate — the equation most drug labels dose against
• Wells score (pulmonary embolism)Pre-test probability of PE
• CURB-65Severity and site-of-care in community-acquired pneumonia
• qSOFABedside flag for poor outcome in suspected infection
• Glasgow Coma ScaleLevel of consciousness
• Body mass indexWeight-for-height index
• Anion gapClassify metabolic acidosis
• Corrected calciumAlbumin-adjusted total calcium