Quick Access — Most Used
ASCVD 2013
PHQ-9
MAP
MadMD Risk Calculators
50 calculators available
Clinical Disclaimer: These calculators are for informational purposes only. Results should always be interpreted in the context of the full clinical picture. Always apply your best medical judgment.
CrCl (Cockcroft-Gault)
Calculates CrCl according to the Cockcroft-Gault equation.
CKD-EPI GFR
Estimates GFR in CKD patients using serum creatinine.
MDRD GFR
Estimates GFR in CKD patients using creatinine and patient characteristics.
FENa
Determines if renal failure is due to prerenal or intrinsic pathology.
Free Water Deficit
Calculates free water deficit in patients with hypernatremia or dehydration.
Na Correction (Hyperglycemia)
Calculates the actual sodium level in patients with hyperglycemia.
Serum Osmolality
Calculates expected serum osmolarity to detect unmeasured compounds.
Anion Gap
Evaluates states of metabolic acidosis.
MAP
Calculates mean arterial pressure.
CHA₂DS₂-VASc
Calculates stroke risk for patients with atrial fibrillation.
ASCVD 2013
Determines 10-year risk of hard ASCVD (MI, stroke, or death).
PREVENT CVD
Predicts 10- and 30-year risk of CVD in patients aged 30–79.
HEART Score
Predicts 6-week risk of major adverse cardiac events in chest pain.
HAS-BLED
Estimates risk of major bleeding for patients on anticoagulation.
RCRI
Estimates risk of cardiac complications after noncardiac surgery.
QTc
Corrects the QT interval for heart rate extremes (Bazett, Fridericia, Framingham).
Framingham CHD
Estimates 10-year risk of heart attack in patients 30–79 years.
LDL Calculated
Calculates LDL based on total cholesterol, HDL, and triglycerides.
Wells' PE
Objectifies risk of pulmonary embolism.
PERC Rule
Rules out PE if no criteria are present and pre-test probability ≤15%.
CURB-65
Estimates mortality of community-acquired pneumonia.
PSI/PORT
Estimates mortality for adult patients with community-acquired pneumonia.
STOP-BANG
Screens for obstructive sleep apnea.
FIB-4
Noninvasive estimate of liver scarring in HCV and HBV patients.
Child-Pugh
Estimates cirrhosis severity.
MELD-Na
Quantifies end-stage liver disease for transplant planning with sodium.
BMI / BSA
Calculates body mass index and body surface area.
IBW / ABW
Calculates ideal body weight (Devine formula) and adjusted body weight.
Corrected Calcium
Calculates a corrected calcium level for patients with hypoalbuminemia.
HOMA-IR
Approximates insulin resistance using fasting glucose and insulin.
Steroid Conversion
Converts steroid dosages using dosing equivalencies.
Maintenance Fluids
Calculates maintenance fluid requirements by weight (Holliday-Segar).
NIHSS
Quantifies stroke severity and monitors for neurological changes.
GCS
Coma severity based on Eye, Verbal, and Motor criteria.
PECARN
Predicts need for brain imaging after pediatric head injury.
Wells' DVT
Calculates risk of DVT based on clinical criteria.
Caprini VTE
Stratifies VTE risk in surgical patients, guiding prophylaxis decisions.
Padua VTE
Determines anticoagulation need in hospitalized patients by VTE risk.
MME Calculator
Calculates total daily morphine milligram equivalents.
PHQ-9
Objectifies degree of depression severity.
GAD-7
Measures severity of anxiety.
CIWA-Ar
Objectifies severity of alcohol withdrawal.
Centor Score
Estimates probability that pharyngitis is streptococcal.
SIRS / Sepsis
Defines the severity of sepsis and septic shock.
SOFA Score
Predicts ICU mortality based on lab results and clinical data.
CURB-65 (ID)
Estimates mortality of community-acquired pneumonia.
Pregnancy Dates
Calculates pregnancy dates from last period, gestational age, or conception.
ARISCAT
Predicts risk of pulmonary complications after surgery.
Gupta MICA
Predicts risk of MI or cardiac arrest after surgery.
DASI
Estimates functional capacity for perioperative risk assessment.