Guideline-referenced calculators for every specialty.
Every calculator is linked to its source guideline, includes score interpretation, and explains the clinical evidence behind each recommendation. Create a free account to use the interactive calculators.
Cardiology
4 calculatorsCHA₂DS₂-VASc
Calculate stroke risk in non-valvular atrial fibrillation. CHA₂DS₂-VASc score guides anticoagulation decisions per ESC 2020 and AHA guidelines.
HAS-BLED
Estimate major bleeding risk in atrial fibrillation patients on anticoagulation. HAS-BLED score identifies modifiable bleeding risk factors per ESC 2020 guidelines.
GRACE Score
Predict in-hospital and 6-month mortality in acute coronary syndrome (ACS). GRACE score guides invasive strategy timing in NSTEMI and unstable angina per ESC guidelines.
HEART Score
Stratify risk of major adverse cardiac events (MACE) in patients with chest pain. HEART score guides early discharge vs admission and observation in the emergency department.
Critical Care
2 calculatorsSOFA Score
Calculate organ dysfunction severity in ICU patients. SOFA score assesses six organ systems and defines sepsis per the Sepsis-3 criteria.
qSOFA
Rapidly screen for sepsis at the bedside using three clinical criteria. qSOFA identifies deteriorating patients outside the ICU who may need urgent intervention.
Haematology
1 calculatorHepatology
2 calculatorsMELD Score
Estimate 90-day mortality in chronic liver disease. MELD score is used for liver transplant prioritisation and prognosis in cirrhosis and acute-on-chronic liver failure.
Child-Pugh
Assess severity and prognosis of liver cirrhosis. Child-Pugh classification (A, B, C) guides surgical risk assessment and indicates need for liver transplant evaluation.
Nephrology
1 calculatorRespiratory Medicine
2 calculatorsWells PE
Assess pre-test probability of pulmonary embolism (PE). Wells PE score stratifies patients into low, moderate, or high probability to guide CT-PA and D-dimer testing.
CURB-65
Assess severity of community-acquired pneumonia (CAP). CURB-65 score guides hospital admission and ICU referral decisions per BTS guidelines.
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