Clinical tools

Calculate Body Mass Index (BMI) and body surface area from weight and height. Includes BMI classification.

Calculate mean arterial pressure (MAP) from systolic and diastolic blood pressure.

Calculate ideal body weight by height using the Devine, Robinson, Miller, and Hamwi formulas.

Calculate corrected QT (QTc) using Bazett, Fridericia, Framingham, and Hodges formulas.

Calculate LDL cholesterol using the Friedewald formula from total cholesterol, HDL, and triglycerides.

Calculate fluid resuscitation volume for burn patients using the Parkland formula.

Convert HbA1c percentage to estimated average glucose (eAG) in mg/dL and mmol/L.

Confusion Assessment Method for the ICU (CAM-ICU) for delirium screening in critically ill patients.

Classify asthma control using the GINA 2025 criteria (well-controlled, partly controlled, uncontrolled).

CAGE questionnaire for alcohol use disorder screening (4 questions).

Calculate SAAG to differentiate portal hypertensive from non-portal hypertensive ascites.

Calculate transferrin saturation index from serum iron and total iron-binding capacity (TIBC).

Score cognitive function with the 30-point Mini-Mental State Examination.

Predict 6-month mortality in alcoholic hepatitis patients on steroid therapy using the Lille model.

Stratify Covid-19 severity by clinical and laboratory criteria.

Assess nicotine dependence severity with the Fagerström Test (6 questions).

Estimate total blood volume by weight, height, and sex (Nadler formula).

Estimate glomerular filtration rate (eGFR) using the 2021 CKD-EPI creatinine equation.

Estimate creatinine clearance using the Cockcroft-Gault formula.

Estimate glomerular filtration rate using the 4-variable MDRD equation.

Differentiate prerenal from intrinsic acute kidney injury using FENa.

FEUrea for AKI workup in patients on diuretics where FENa is unreliable.

Calculate UPCR from a single urine sample to estimate 24-hour protein excretion.

Calculate bicarbonate replacement dose for severe metabolic acidosis.

Calculate gestational age and estimated due date from last menstrual period (Naegele rule).

Calculate gestational age and due date from ultrasound biometry.

Calculate the APGAR score at 1 and 5 minutes for newborn assessment.

Pediatric-adapted Glasgow Coma Scale for infants and children.

Estimate uncuffed and cuffed ETT size and depth by age in children.

Pediatric drug infusion rate calculator in mcg/kg/min.

Pediatric drug infusion rate calculator in mg/kg/hour.

Score severity of neonatal abstinence syndrome using the Finnegan scale.

Score consciousness in infants and pre-verbal children on three responses, 3 to 11, where the standard Glasgow verbal items do not apply.

Seven CBC findings become a 0 to 7 sepsis screen for newborns, so you can risk-stratify while the blood culture is still pending.

Estimate gestational age from five physical findings in the first day of life, for when ultrasound dating or a last menstrual period is missing.

Combines physical signs with neurological responses to date a newborn, the Capurro variant to reach for after the first 24 hours of life.

Calculate serum osmolality from sodium, glucose, and BUN.

Correct total serum calcium for hypoalbuminemia.

Correct serum sodium for hyperglycemia (Katz / Hillier formulas).

Calculate total body iron deficit for IV iron replacement using the Ganzoni formula.

Convert between benzodiazepine doses (diazepam, lorazepam, alprazolam, clonazepam, etc.).

Convert between corticosteroid doses (prednisone, dexamethasone, hydrocortisone, etc.).

Convert between opioid doses to morphine milligram equivalents (MME).

Calculate induction and paralytic doses for rapid sequence intubation by weight.

Correct total phenytoin level for albumin and renal function (Sheiner-Tozer).

Convert IV drip rate from drops per minute (gtt/min) to mL/hour and vice versa.

Convert a vasoactive order written in mcg/kg/min into the pump rate in mL/hour, from patient weight and bag concentration.

Estimate the expected normal PaO2 based on patient age.

Calculate the PaO2/FiO2 ratio (P/F ratio) and classify ARDS severity by Berlin criteria.

Calculate SpO2/FiO2 ratio and equivalence to PaO2/FiO2 for non-invasive ARDS assessment.

Full Outline of UnResponsiveness (FOUR) score for coma assessment.

Grade subarachnoid hemorrhage by CT scan appearance using the Fisher scale.

Glasgow Coma Scale with pupil reactivity score (GCS-P).

Lawton Instrumental Activities of Daily Living scale for functional assessment in elderly.

Ramsay scale for level of sedation assessment (1–6).

Richmond Agitation-Sedation Scale (RASS) for ICU sedation assessment.

Riker Sedation-Agitation Scale (SAS) for ICU sedation.

Canadian Cardiovascular Society (CCS) functional classification of angina pectoris.

Aldrete and Kroulik post-anesthesia recovery score.

Eastern Cooperative Oncology Group performance status scale (0–5).

Karnofsky Performance Status scale (0–100) for assessing oncology patient function.

Palliative Performance Scale (PPS) for hospice and palliative care prognosis.

Six prognostic parameters that estimate survival in metastatic spinal disease and point toward excisional, palliative, or conservative care.

Primary tumor grade plus visceral and bone spread give a 2 to 10 score that maps onto a surgical strategy, from wide excision down to supportive care.

PaP score for 30-day survival probability in palliative cancer patients.

Predict remaining weeks in advanced cancer from bedside findings alone: performance status, intake, edema, dyspnea at rest, and delirium. No labs needed.

Calculate cumulative cigarette smoking exposure in pack-years.

Add up four ICU risk factors: a total of 3 or more flags invasive candidiasis in non-neutropenic patients and justifies an antifungal work-up.

Estimate the yearly stroke risk of non-valvular atrial fibrillation, running from roughly 1.9 percent at zero points to 18 percent at six.

Place a heart failure patient in class I through IV by how much ordinary activity it takes to bring the symptoms on.

Check the GELF markers of high tumor burden to settle whether follicular lymphoma calls for treatment now or watchful waiting.

Disease Activity Score (28 joints) with CRP for rheumatoid arthritis activity.

Disease Activity Score (28 joints) with ESR for rheumatoid arthritis activity.

ABCD2 score for stroke risk after transient ischemic attack.

Albumin, INR, mental status, systolic pressure and age combine into a 0 to 5 estimate of in-hospital death after an upper GI bleed.

Twelve physiologic variables plus age and chronic health status, scored 0 to 71, with the predicted ICU mortality attached to each band.

Five findings available within the first 24 hours flag which acute pancreatitis admissions carry the higher mortality, well before a CT severity index is usable.

Weigh temperature, white count, secretions, oxygenation, chest film and cultures into a 0 to 12 score; anything above 6 argues for treating ventilator-associated pneumonia.

Estimate in-hospital major bleeding risk in NSTE-ACS from eight variables, then weigh it against ischemic risk before choosing antithrombotics.

CURB-65 score for community-acquired pneumonia severity and mortality risk.

Add up the eight MANTRELS findings to gauge how likely acute appendicitis is, and whether to observe, image, or call surgery.

Caprini Risk Assessment for venous thromboembolism in surgical patients.

Modified Centor score for streptococcal pharyngitis probability.

Seven risk factors give a 0 to 9 stroke risk score for non-valvular atrial fibrillation, with the annual risk and the anticoagulation threshold for each sex.

Child-Pugh score for prognosis of chronic liver disease and cirrhosis.

Age, BMI, glucose status, AST/ALT, platelets and albumin give a non-invasive read on advanced fibrosis in fatty liver, with both NFS cutoffs applied.

10-year cardiovascular disease risk by Framingham equations.

10-year heart attack and stroke risk by the ACC/AHA Pooled Cohort Equations.

10- and 30-year risk of CVD, ASCVD and heart failure by the AHA PREVENT equations.

Predict chemotherapy-associated clot risk in ambulatory cancer patients from cancer site, blood counts and BMI, plus the threshold where prophylaxis is worth considering.

Lee RCRI for preoperative cardiac risk in non-cardiac surgery.

Enter prothrombin time, the lab control PT and bilirubin to get the discriminant function and see whether alcohol-associated hepatitis crosses the DF 32 steroid threshold.

Combine stool frequency, rectal bleeding, endoscopy and physician assessment into a 0 to 12 activity score, or drop the endoscopy item for the partial Mayo.

Padua score for VTE risk in hospitalized medical patients.

Five admission signs plus six at 48 hours give a mortality estimate for acute pancreatitis, with the score of 3 that flags severe disease.

Risk of Paradoxical Embolism (RoPE) score for cryptogenic stroke with PFO.

Grade rebleeding and mortality risk after an upper GI bleed, using age, shock and comorbidity alone or the complete score once endoscopy is done.

San Francisco Syncope Rule for predicting serious outcomes after syncope.

Alberta Stroke Program Early CT Score (ASPECTS) for early ischemic changes in stroke.

Seven findings put a suspected pulmonary embolism into low, moderate or high probability, so you know whether to send a D-dimer or go straight to CTA.

Ten clinical items, one of them worth minus two, give the pre-test probability of deep vein thrombosis and whether a D-dimer can settle it without ultrasound.

FIB-4 index for non-invasive liver fibrosis assessment.

Nine factors give the one-year major bleeding risk on anticoagulation for AF, and flag which of them (BP, alcohol, NSAIDs, labile INR) you can actually fix.

HEART Score for major adverse cardiac events in chest pain patients.

Model for End-Stage Liver Disease (MELD) and MELD-Na scores for cirrhosis prognosis.

National Early Warning Score 2 (NEWS 2) for clinical deterioration detection.

National Institutes of Health Stroke Scale (NIHSS) for stroke severity.

Pneumonia Severity Index (PSI/PORT) for mortality risk in community-acquired pneumonia.

Quick Sepsis-Related Organ Failure Assessment (qSOFA) for sepsis screening.

PT-INR, platelet count and a capped SOFA subscore decide whether sepsis-induced coagulopathy is present, catching it earlier than the overt DIC criteria.

Sequential Organ Failure Assessment (SOFA) score for ICU organ dysfunction.

Eight weighted variables give 30-day mortality after ST-elevation MI, from under 1 percent to well past 20, for triage and prognosis at the bedside.

Seven equal-weight criteria give the 14-day risk of death, MI or urgent revascularization in unstable angina and NSTEMI, steering the invasive versus conservative call.

GRACE score for in-hospital and 6-month mortality in acute coronary syndrome.

Arterial pH, bicarbonate and mental status grade a diabetic ketoacidosis episode mild, moderate or severe by whichever parameter is worst.

SCORAD Index for severity of atopic dermatitis.

Rate erythema, induration, scaling and area involved for head, arms, trunk and legs; the regional weights add up to a PASI from 0 to 72.

Pulmonary Embolism Severity Index (PESI) for 30-day mortality.

Four bedside signs (appearance, eyes, mucous membranes, tears) put a child with gastroenteritis on a 0 to 8 dehydration scale that guides rehydration.

Pick the highest indicator in each clinical process and the Larach scale ranks how likely an intraoperative event really was malignant hyperthermia, rank 1 to 6.

Crohn's Disease Activity Index (CDAI) for assessing Crohn's disease activity.

Bishop score for predicting successful labor induction.

Score vascular pattern, bleeding and erosions at the worst-affected segment for a 0 to 8 endoscopic index that beats the Mayo subscore on inter-observer reliability.

Weight MI timing, angina class, pulmonary edema and seven more factors into a Detsky class I to III for cardiac risk before non-cardiac surgery.

The original 1977 nine-factor index, scoring perioperative cardiac complication risk from S3 gallop, recent MI, arrhythmia and surgery type into classes I to IV.

Harvey-Bradshaw Index for Crohn's disease activity (simplified CDAI).

Grade the six body regions on the AIS scale; the three worst get squared and summed into the 0 to 75 trauma score where anything above 15 counts as major trauma.

Six yes-or-no criteria split acute PE into low risk (all absent, roughly 1 percent 30-day mortality) and high risk, the first gate for outpatient treatment.

ISS stage, high-risk FISH cytogenetics and serum LDH combine into R-ISS stage I, II or III for myeloma prognosis and trial stratification.

Eight bedside criteria that, all negative in an already low-risk patient, let you close out pulmonary embolism without a D-dimer or a scan.

Seven admission variables (BP, BUN, sodium, age, heart rate, race, COPD) map to in-hospital mortality in acute heart failure, from under 1 percent to over 50.

Total seven items to a maximum of 26; a score of 21 or more marks febrile neutropenia as low risk and opens the door to oral outpatient antibiotics.

Hemoglobin, base excess, vitals, FAST and fracture pattern give the probability that a trauma patient will need massive transfusion, so the protocol fires early.

Browse 1,035 exercises by muscle, equipment, and difficulty. Step-by-step instructions and a muscle map for every exercise — free, no sign-up.

Calculate running pace per km and per mile from distance and time, plus projected 5K, 10K, half and marathon finish times. Free, in your browser.

Calculate your pregnancy due date from LMP, conception date, or IVF transfer using Naegele’s rule, plus current gestational age and trimester.

Estimate basal metabolic rate from sex, age, height and weight, with Mifflin-St Jeor, Harris-Benedict and Katch-McArdle side by side.

Calculate total daily energy expenditure from BMR and activity level, with calorie targets for weight loss, maintenance and weight gain.