Clinical calculators
135 clinical scores and formulas in 18 specialties. Each one works right here in your browser, free and without an account.
Most used
Our pick of the scores reached for most on the wards.
- CHA₂DS₂-VAScCardiology · 8 inputs
- HAS-BLEDCardiology · 9 inputs
- Wells' Criteria (PE)Pulmonology · 7 inputs
- Wells' Score (DVT)Cardiology · 10 inputs
- SOFA ScoreCritical care · 6 inputs
- qSOFACritical care · 3 inputs
- GRACE ScoreCardiology · 8 inputs
- CURB-65Pulmonology · 5 inputs
- HEART ScoreCardiology · 5 inputs
- MELD-Na ScoreHepatology and GI · 4 inputs
- Child-Pugh ScoreHepatology and GI · 5 inputs
- eGFR (CKD-EPI 2021)Nephrology · 3 inputs
- NEWS2Critical care · 7 inputs
- Glasgow Coma ScaleNeurology · 3 inputs
- NIHSS (Simplified)Neurology · 13 inputs
- Cockcroft-Gault CrClNephrology · 4 inputs
- Anion GapCritical care · 4 inputs
- PHQ-9Psychiatry · 9 inputs
Cardiology
Stroke and bleeding risk in AF, chest pain and ACS, haemodynamics, QT and valves.
- CHA₂DS₂-VAScCardiology · 8 inputs
- CHADS₂Cardiology · 5 inputs
- GRACE ScoreCardiology · 8 inputs
- HEART ScoreCardiology · 5 inputs
- TIMI Risk Score (NSTEMI/UA)Cardiology · 7 inputs
- TIMI Risk Score (STEMI)Cardiology · 8 inputs
- HAS-BLEDCardiology · 9 inputs
- Mean Arterial PressureCardiology · 2 inputs
- Pulse PressureCardiology · 2 inputs
- QTc CalculatorCardiology · 3 inputs
- Revised Cardiac Risk IndexCardiology · 6 inputs
- Framingham Risk ScoreCardiology · 8 inputs
- Killip ClassificationCardiology · 1 input
- Shock IndexCardiology · 2 inputs
- Cardiac Output (Fick)Cardiology · 3 inputs
- Cardiac IndexCardiology · 3 inputs
- Duke Criteria (Endocarditis)Cardiology · 7 inputs
- ABCD² ScoreCardiology · 5 inputs
Pulmonology
Pulmonary embolism, pneumonia severity, COPD, ARDS and blood gases.
- Wells' Criteria (PE)Pulmonology · 7 inputs
- Revised Geneva Score (PE)Pulmonology · 8 inputs
- PERC RulePulmonology · 8 inputs
- CURB-65Pulmonology · 5 inputs
- PSI / PORT ScorePulmonology · 20 inputs
- A-a Oxygen GradientPulmonology · 4 inputs
- PaO₂/FiO₂ RatioPulmonology · 2 inputs
- BODE IndexPulmonology · 4 inputs
- mMRC Dyspnoea ScalePulmonology · 1 input
- GOLD COPD StagingPulmonology · 2 inputs
- DECAF ScorePulmonology · 5 inputs
- Berlin ARDS CriteriaPulmonology · 6 inputs
- FEV₁ % PredictedPulmonology · 4 inputs
- Arterial Oxygen Content (CaO₂)Pulmonology · 3 inputs
Nephrology
Kidney function, acute kidney injury, and the anion and osmolal gaps.
- eGFR (CKD-EPI 2021)Nephrology · 3 inputs
- Cockcroft-Gault CrClNephrology · 4 inputs
- MDRD eGFRNephrology · 3 inputs
- Fractional Excretion of Sodium (FENa)Nephrology · 4 inputs
- Fractional Excretion of Urea (FEUrea)Nephrology · 4 inputs
- Urine Anion GapNephrology · 3 inputs
- AKI Staging (KDIGO)Nephrology · 2 inputs
- Osmolal GapNephrology · 4 inputs
- Tubular Reabsorption of Phosphate (TRP)Nephrology · 4 inputs
- Urine Protein:Creatinine RatioNephrology · 2 inputs
Neurology
Coma and stroke scales, subarachnoid and intracerebral haemorrhage, function and sleepiness.
Hepatology and GI
Liver disease severity, upper GI bleeding, pancreatitis and liver fibrosis.
- MELD-Na ScoreHepatology and GI · 4 inputs
- Child-Pugh ScoreHepatology and GI · 5 inputs
- MELD 3.0Hepatology and GI · 5 inputs
- Rockall ScoreHepatology and GI · 5 inputs
- Glasgow-Blatchford ScoreHepatology and GI · 9 inputs
- Ranson's CriteriaHepatology and GI · 11 inputs
- BISAP ScoreHepatology and GI · 5 inputs
- FIB-4 IndexHepatology and GI · 4 inputs
Endocrinology and metabolism
Body size, corrected calcium and sodium, HbA1c and insulin resistance.
- Body Mass Index (BMI)Endocrinology and metabolism · 2 inputs
- Corrected CalciumEndocrinology and metabolism · 2 inputs
- Corrected Sodium (Hyperglycaemia)Endocrinology and metabolism · 2 inputs
- HbA1c ↔ eAGEndocrinology and metabolism · 1 input
- HOMA-IREndocrinology and metabolism · 2 inputs
- Body Surface Area (Mosteller)Endocrinology and metabolism · 2 inputs
- Ideal Body Weight (IBW)Endocrinology and metabolism · 2 inputs
- Waist-Hip RatioEndocrinology and metabolism · 3 inputs
Critical care
Early warning, sepsis and organ failure, acid-base, sedation and oxygen delivery.
Paediatrics
Newborn assessment, fluids, coma, early warning and pain in children.
Infectious diseases
Sepsis screening, sore throat, febrile neutropenia, necrotising fasciitis and S. aureus bacteraemia.
Haematology
Heparin-induced thrombocytopenia, the anaemia work-up and venous thromboembolism risk.
Psychiatry
Questionnaires for depression, anxiety, alcohol use and PTSD.
Oncology
Performance status, carboplatin dosing and prognosis in breast cancer and MDS.
Nutrition
Energy needs, malnutrition screening and nitrogen balance.
Fluids and electrolytes
Osmolality, water and potassium deficits, safe sodium correction and fluids in burns.
Pharmacology
Vancomycin and aminoglycoside dosing, anticoagulant reversal and renal dose adjustment.
Obstetrics and gynaecology
Due dates, cervical ripeness, postnatal depression and vaginal birth after caesarean.
Rheumatology
Rheumatoid arthritis and lupus activity, fracture risk and gout.
Surgery and anaesthesia
Anaesthetic and operative risk, and VTE risk on the ward.
Browse by specialty
- Cardiology28 calculators
- Pulmonology14 calculators
- Nephrology15 calculators
- Gastroenterology and hepatology8 calculators
- Endocrinology and metabolism13 calculators
- Neurology8 calculators
- Psychiatry5 calculators
- Infectious diseases5 calculators
- Haematology5 calculators
- Oncology5 calculators
- Critical care and anaesthesia7 calculators
- Surgery3 calculators
- Rheumatology4 calculators
- Obstetrics and gynaecology4 calculators
- Paediatrics6 calculators
- Pharmacology5 calculators
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