Clinical tools
Emergency Medicine & Critical Care Calculators
Emergency and critical-care calculators cover suspected DVT/PE assessment, confirmed-PE short-term severity, prognosis and outpatient exclusions, surgical/perioperative and hospitalized-medical-patient VTE risk, pneumonia severity, suspected-appendicitis assessment, acute pancreatitis assessment, general severity and organ dysfunction, sepsis and systemic response, neurologic and sedation assessment, and hemodynamics, burns, and resuscitation arithmetic.
Each tool uses its own population, observation window, measurement definitions, and unavailable-data rules. A point total or arithmetic result from one instrument cannot be substituted for another.
Find a tool
Matching clinical tools
Suspected DVTWells DVTWells Score Calculator for DVTCalculate the modified Wells score for suspected lower-extremity DVT, including exact paired calf measurements and current two-level interpretation.Suspected PEWells PEWells Score Calculator for Pulmonary Embolism (PE)Calculate the seven-criterion Wells score for pulmonary embolism with modified two-level and standard three-level classifications.Suspected PERevised Geneva Score Calculator for Pulmonary EmbolismCalculate original and simplified Revised Geneva pretest-probability scores for adult suspected PE from direct age, pulse and explicit source findings.PE rule-outPERC Rule Calculator for Pulmonary EmbolismCheck all eight PERC criteria for a low-probability adult suspected-PE assessment, with exact age, pulse, room-air oxygen, history, and examination boundaries.Suspected PE algorithmYEARS Criteria & D-Dimer Algorithm for Pulmonary EmbolismApply standard or pregnancy-adapted YEARS to three clinical criteria and an explicitly labeled FEU D-dimer, including the pregnancy compression-ultrasound branch.Confirmed PE severityPESI / sPESIPESI & sPESI Calculator for Pulmonary EmbolismCalculate original PESI and independently validated simplified PESI after confirmed acute pulmonary embolism from direct vital signs and source-defined clinical factors.Confirmed PE severityBova Score Calculator for Pulmonary EmbolismCalculate original Bova points and stage in normotensive confirmed acute PE from systolic pressure, heart rate, assay-classified troponin and documented RV dysfunction.Confirmed PE severityCPES Score Calculator – Composite Pulmonary Embolism Shock ScoreCalculate the original six-component CPES score in nonhypotensive confirmed PE, with direct heart rate, external assessment statuses and a transparent component audit.Outpatient suitabilityHestia Criteria Calculator for Outpatient Pulmonary Embolism TreatmentCheck the original 11 Hestia outpatient PE exclusions with explicit assessments, exact Cockcroft–Gault CrCl and a transparent positive-criterion audit.Medical inpatient VTE riskPadua ScorePadua Prediction Score Calculator for VTE RiskCalculate the source-exact 11-item Padua Prediction Score for hospitalized medical patients, with explicit definitions, a full point audit, and bleeding-risk limitations.Surgical VTE riskCaprini Score Calculator for Surgical VTE RiskCalculate the 2005 Caprini surgical/perioperative VTE risk score from explicit patient and procedure factors, with complete point audit and separate source category frameworks.Pneumonia severityCURB-65 Calculator for Pneumonia SeverityCalculate the five CURB-65 criteria for adult community-acquired pneumonia using confusion, urea or BUN, respiratory rate, systolic and diastolic blood pressure, and age, with current NICE hospital risk groups.Pneumonia severityPSI / PORTPneumonia Severity Index (PSI/PORT) CalculatorCalculate the formal two-step PSI/PORT score and class for adult community-acquired pneumonia, with historical risk and site-of-care context.Acute pancreatitisBISAP Score Calculator for Acute PancreatitisRecord the five-item adult BISAP early prognostic score from the first 24 hours of an established acute-pancreatitis hospitalization.Suspected appendicitisAlvarado Score Calculator for Acute AppendicitisCalculate the original 10-point Alvarado/MANTRELS score or the explicit Kalan 9-point modified score from symptoms, measured oral temperature, and WBC.Critical illnessAPACHE II Score CalculatorReproduce the 1985 adult general-ICU APACHE II severity score from worst first-24-hour physiology, age and defined chronic-health points.Critical illnessSOFA Score Calculator (Classic SOFA-1)Calculate the original Classic SOFA-1 score from raw clinical values across six organ systems in one defined 24-hour window, with an optional comparable-baseline change.Sepsis / systemic responseqSOFA Score Calculator – Quick SOFA (Sepsis-3)Calculate the original adult Sepsis-3 qSOFA prognostic prompt from respiratory rate, altered mentation, and systolic blood pressure.Sepsis / systemic responseSIRS Criteria Calculator (Classic Adult 1992)Count the classic 1992 adult systemic inflammatory response criteria from submitted measurements, without diagnosing sepsis.Clinical deteriorationNEWS2 Score Calculator – National Early Warning Score 2Calculate the current RCP NEWS2 adult acute-illness score from a complete observation set, including the correct SpO₂ scale, oxygen uplift, red-score components, and trigger category.Clinical deteriorationMEWS ScoreModified Early Warning Score (MEWS) CalculatorCalculate the classic Subbe 2001 adult Modified Early Warning Score from systolic blood pressure, heart rate, respiratory rate, temperature, and AVPU.Neurologic assessmentGlasgow Coma Scale (GCS) Score CalculatorRecord standard Glasgow Coma Scale eye, verbal, and motor responses, calculate a complete score when all are testable, and preserve Not Testable components without a fabricated total.Sedation assessmentRASS Score Calculator (Richmond Agitation-Sedation Scale)Look up the adult ICU RASS score chart or complete the original observation-to-stimulation assessment sequence.HemodynamicsShock Index Calculator (HR/SBP)Calculate traditional adult Shock Index from paired heart rate and systolic blood pressure.Burn assessmentBurn TBSA Calculator – Adult Rule of NinesEstimate adult burn TBSA with the Rule of Nines, partial segment coverage, and optional separate historical Classic Parkland arithmetic.
Important limits
- No result independently diagnoses a disease, sepsis, shock, organ failure, or another acute condition.
- Immediate clinical concern or hemodynamic deterioration overrides a static score.
- These pages do not select testing, medication, fluids, monitoring, referral, admission, or discharge.