Calculators

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Clinical calculators and tools may be used to assist in diagnosis, assess severity and guide treatment. This section contains the most commonly used tools in medical decision-making.

Full List
Anthropometry
Body Mass Index
Ideal Body Weight
Body Surface Area
Blood Gas Analyser
Cardiovascular
Mean Arterial Pressure
Corrected QT Interval
CHADS₂
CHA₂DS₂VASc
Duke Criteria
Respiratory
A-a Gradient
PaO₂ : FiO₂
SMARTCOP
CURB-65
CRB-65
PSI
PERC Rule
STOPBANG
Gastrointestinal
Alvarado Score
Child-Pugh
Ranson's Criteria
Neurological
Glasgow Coma Scale
Paediatric GCS
ABCD₂
ABCD₃I
WFNS Grading
Biochemistry
CrCl (Cockcroft-Gault)
eGFR (MDRD)
eGFR (CKD-EPI)
Corrected Na⁺ (Glucose)
Fractional Na⁺ Excretion
Haematology
Wells Criteria (DVT)
Wells Criteria (PE)
4Ts Score for HITS
MASCC Risk Index
Critical Care
Anion Gap / Gap Gap
SOFA Score
Quick SOFA Score
Trauma
Parkland Formula
C-Spine Criteria
CT Head Criteria
Obstetrics
Bishop Score