Stanford School of Medicine

LaneConnex
Lane Medical Library & Knowledge Management Center

 

a division of IRT

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Medical Calculators

Browse over 400 medical calculators by title.
10 year CVD risk calculator
A-a gradient
ABG Pro
Absolute Neutrophil count
Absolute Reticulocyte count
ACC/AHA Guidelines for assessing perioperative risk from CAD
Acid-base graph/interactive Grogono diagram
Acne management [algorithm]
ACP Guidelines for assessing perioperative risk from CAD
ACP's PIER :
Acute low back problems treatment algorithms
Acute lower GI bleeding algorithms
Acute upper GI bleeding
Adult immunizations
Adult low back pain [algorithm]
Age calculator
Alcoholic liver disease
Alcoholic liver disease combined index (clinical and laboratory--CCLI)
Algorithm for the pharmacotherapy of depression
Alvarado appendicitis score
Alveolar-arterial gradient calculator
Amikacin dosing q24hr (also Kanamycin and Streptomycin)
Aminoglycoside clearance estimate
Androgen deficiency in aging males (ADAM) screener
Anion gap
Anion gap delta Multicalc
Anthrax screening for exposed patients TreeCalc
AntibioticaPalm
Aortic stenosis and valve replacement prediction TreeCalc
Apache II
APACHE II scoring system and mortality estimates (Acute Physiology and Chronic Health Disease Classification System II)
APACHE II scoring system by diagnosis
Apgar score
Appropriateness of discharge for community-acquired pneumonia
Archimedes
ARDS severity score
Arrhythmogenic right ventricular dysplasia diagnostic criteria
Arterial blood gas interpretation TreeCalc
Asbestos surveillance algorithms
Ascites Albumin gradient
Asthma hospitalization one year risk calculator
ATP III Cholesterol management implementation tool
ATP III Metabolic syndrome criteria calculator
Atrial fibrillation and arterial thromboembolism risk
Atrial fibrillation five year risk of stroke
Atrial fibrillation five year risk of stroke or death
Autoimmune hepatitis diagnostic criteria
Ballard maturational assessment of gestational age
Barthel Index
Basal energy expenditure: Harris-Benedict Equation
Basic unit conversions
Bayesian analysis model
Bayesian statistics I multiCalc
Bayesian statistics II MultiCalc
Benefit increase / number needed to treat Multicalc
Benign positional vertigo decision TreeCalc
Benign Prostatic Hypertrophy (BPH), American Urological Association Symptom Index
Benzodiazepine medication dosing conversions
Berg Balance Scale
Bicarbonate deficit
BiliTool
Binding-site estimation suite of tools
Bioterrorism
Bleeding probability after TPA for MI
Blessed Dementia Information Memory Concentration Test
Blessed Dementia Scale
Blood alcohol concentration estimation
Blood oxygen content calculator
BMI calculator (National Heart, Lung, and Blood Institute (U.S.))
Body mass index (Quetelet's index)
Body surface area (Du Bois method)
Body surface area (Mosteller, square root method)
Body surface area, body mass index
Body surface area, body mass index (BMI)
Braden score for pressure ulcer risk stratification
Bradycardia treatment algorithm
Breast cancer diagnostic algorithms
Breast cancer recurrence risk after mastectomy (simple)
Breast cancer risk assessment tool
BSA/BMI
Burn injury fluid resuscitation ( Parkland crystalloid estimate )
Burn injury fluid resuscitation ( Slater estimate )
Burn injury fluid resuscitation ( Brooke estimate )
Burn injury fluid resuscitation ( Demling dextran estimate )
Burn injury fluid resuscitation ( Evans estimate )
Burn injury fluid resuscitation (Modified Brooke crystalloid estimate)
Calcium correction in hypoalbuminemia
Canadian Neurological Scale
CAP prognostic calculator, using Fine's prediction criteria
Cardiac arrest: likelihood of mortality and neurologic recovery
Cardiac output
Cardiac output
Cardiac output MultiCalc
Cardiac risk index for noncardiac surgical procedures
Cardiac risk index in noncardiac surgery (Detsky)
Cardiac risk index in noncardiac surgery (Goldman)
Cardiac surgery risk assessment scale (UPMC Shadyside Hospital, 2002)
Carpal tunnel syndrome bivariate decision TreeCalc
Carpal tunnel syndrome multivariate decision TreeCalc
CDC Table for calculated body mass index values for selected heights and weights for ages 2 to 20 years
Cervical cancer screening [algorithm]
Cesarean section delivery probability among nulliparous women TreeCalc
Cesarean section delivery probability among parous women TreeCalc
Chi square analysis
Child immunizations
Child Turcotte Pugh grading of liver disease severity
Chronic fatigue syndrome diagnostic criteria
Cincinnati Stroke Scale
Clinical assessment of DVT
Clock drawing task (cognitive impairment screening)
Closing capacity
Colorectal cancer screening [algorithms]
COMBOSA3D
Community acquired pneumonia severity scale
Community-acquired pneumonia mortality risk for adults
Comorbidity Index and Score of Charlson et al
Comparative genomics at the University of California, Santa Cruz
CompareProspector
Comprehensive unit conversions
Confidence interval of a binomial proportion
Confidence interval of a difference between proportions
Confidence interval of a ratio of proportions
Confidence interval of a ratio of ratios
Confidence interval of a survey
Consultant for the Pharmacotherapy of Schizophrenia [algorithm]
Convert celsius to fahrenheit
Coronary disease probability
Coronary Heart Disease Risk Calculator
Corrected CSF white count calculator
Corrected protein concentration in blood contaminated CSF
Corrected serum Na+
Corrected WBC in blood contaminated CSF
Corticosteroid medication dosing conversions
Creatinine clearance
Creatinine clearance (SI Units)
Creatinine clearance by mass
Creatinine clearance calculator
Creatinine clearance estimate
Creatinine clearance estimate (SI Units)
Creatinine clearance estimate by abbreviated MDRD study equation
Creatinine clearance estimate for changing serum creatinine
Crotalid snakebite severity score
Croup score (pediatric)
CSF IgG index
Cytoscape
Deciding on an operation for thyroid cancer
Determining treatment for Hepatitis B exposure algorithms
Devers OHTN to glaucoma risk calculator
Diabetes screening TreeCalc
Diabetes type predictor TreeCalc
Diagnosis and management of attention deficit hyperactivity disorder in primary care for school age children and adolescents [algorithms]
Diagnosis and management of cutaneous anthrax
Diagnosis and treatment of chest pain and acute coronary syndrome (ACS) [algorithms]. 4th ed.
Diagnosis and treatment of heel pain
Diagnosis and treatment of obstructive sleep apnea [algorithms]
Diagnostic test calculator
Digitalis body load
Distinguishing inhalation anthrax from influenza
Duke criteria for infective endocarditis
DVT probability, ambulatory score system
DVT probability, Kahn score system
DVT probability, St. Andre score system
DVT probability, Wells score sSystem
EBM calculator (University of Toronto)
Ehlers-Danlos Syndrome IV (vascular type) diagnostic criteria
Electronic preventive services selector (ePSS)
Endocarditis diagnostic criteria--Duke criteria
Epoprostenol (Flolan) infusion rate calculator
Epworth sleepiness scale (ESS)
Esophageal varices
Estimated blood level calculations
European system for cardiac operative risk evaluation (EuroSCORE)
Evaluating metastatic cancer, possibly from thyroid: [algorithm]
Evaluating patients for smallpox
Expanded disability status scale
Fall risk in elderly hospitalized patients
FoldMiner
Fractional excretion of Amylase (Amylase to Creatinine clearance ratio)
Fractional excretion of sodium
Fractional excretion of sodium
FRACTURE, Osteoporosis prediction tools
Framingham Chol female 10 year coronary risk prediction
Framingham Chol female 10 year coronary risk prediction (SI units)
Framingham Chol male 10 year coronary risk prediction
Framingham Chol male 10 year coronary risk prediction (SI units)
Framingham LDL female 10 year coronary risk prediction
Framingham LDL female 10 year coronary risk prediction (SI units)
Framingham LDL male 10 year coronary risk prediction
Framingham LDL male 10 year coronary risk prediction (SI units)
Free water deficit
Functional residual capacity
Gail model for 5 year risk of breast cancer
Gail model for predicting individual breast cancer risk
GeneSpring
  • Analytical Tool SUNet ID login and CMGM/PMGM computer account are required to download the software
Gentamicin dosing q24hr (also Tobramycin)
Geriatric depression scale
Geriatric depression scale (Koenig)
Geriatric functional rating scale (GFRS)
GFR calculator (with SI units)
GFR calculator for children and adolescents up to 18 years old, Schwartz and Counahan-Barratt methods
GFR estimation using the MDRD equation (Modification of Diet in Renal Disease Study Group)
GI bleed complication risk
Gibbs Motif sampler
GibbsILR
Glasgow Coma Scale
Glasgow Coma Scale (MedCalc3000)
Glaucoma 5-year risk estimator
Glaucoma risk calculator
Glomerular filtration rate estimation by MDRD equation
Gorlin formula for valve area
GRACE ACS risk model
Gurd's diagnostic criteria for fat embolism syndrome
HaemOncRules
Harris-Benedict Estimation of basal energy expenditure
Hemaglobin A1C estimation from mean plasma glucose
Hemaglobin A1C to mean plasma glucose estimation
Hempispheric Stroke Scale
Henderson-Hasselbach equation
Hepatitis B immunization for healthcare workers [algorithms]
Hepatitis C Virus (HCV) infection-testing algorithm for asymptomatic people
Hepatitis discriminant function for prednisolone treatment in severe alcoholic hepatitis
History & physical of patient with suspected CAD calculator
Hypernatremia treatment algorithm
Hyperthyroidism management with antithyroid drugs [algorithm]
Hyponatremia & hypernatremia
Hyponatremia correction infusate rate
Hyponatremia treatment algorithm
Ideal body weight
Ideal body weight percentage
IME ajusted ratio for medical education medicare payments to teaching hospitals
Inches to centimeters conversion calculator
Inferior wall M.I. in Vector and Scalar electrocardiography
Inferior wall myocardial infarction diagnosis TreeCalc
Influenza diagnosis and treatment TreeCalc
Inspiratory capacity
Interactive growth charts
International normalized ratio of prothrombin time
Interpreting the Hepatitis B panel
InterProScan
Iron replacement (parenteral dosing) for iron deficiency
Irritable bowel syndrome diagnostic criteria (Manning criteria)
IV infusion rate
Jones criteria for diagnosis of rheumatic fever
Kappa measurement of inter-observer agreement MultiCalc
Kappa Measurement of inter-observer agreement: Bennett's kappa
Kappa Measurement of inter-observer agreement: Cohen's kappa
Kappa Measurement of inter-observer agreement: Scott's kappa
Kawasaki disease diagnostic criteria
Kt/V Dialysis dose Barth formula
Kt/V Dialysis dose Basile formula
Kt/V Dialysis dose Daugirdas formula
Kt/V dialysis dose formulae MultiCalc
Kt/V Dialysis dose Jindal formula
Kt/V Dialysis dose Kerr formula
Kt/V Dialysis dose Keshaviah formula
Kt/V Dialysis dose Lowrie formula
Laboratory testing [algorithms] in body fluid exposures for health care workers
LDL cholesterol goal calculator
Lead medical surveillance [algorithms]
Left bundle branch block in Vector and Scalar electrocardiography
Left ventricular hypertrophy in Vector and Scalar electrocardiography
Lexi-CALC online
Likelihood ratio MultiCalc
Lipid screening in adults [algorithm]
Lipid screening in children and adolescents [algorithm]
LOCK 2
Los Angeles Prehospital Stroke Screen (LAPSS)
Low density lipoprotein
Lung injury score
Lung volume Multicalc
M.I. criteria for likelyhood in chest pain with LBBB
M.I. prediction decision TreeCalc
Mainz emergency evaluation score (MEES)
Major depression in adults in primary care in adults [algorithms]
Management of a thyroid enlargement: [algorithm]
Management of initial abnormal Pap smear [algorithms]
Management of type 2 diabetes mellitus [algorithms]
Managing primary hypothyroidism [algorithm]
Mangled extremity severity score
Math calculator
MatInspector
MDCalc
MDscan
Mean corpuscular hemoglobin
Mean corpuscular hemoglobin concentration
Mean corpuscular volume
Mean vascular pressure (systemic or pulmonary)
MedCalc [for PDA]
MedCalc3000
Medical calculators (iPhone and iPod)
Medical calculators (Lane Medical Library)
MedMath
MedRules: Clinical prediction rules
Melanoma risk assessment tool
MenSTAT
MeV
Migraine with aura diagnostic criteria
Migraine without aura diagnostic criteria
Mini mental status exam
Multiple myeloma diagnostic criteria
Myelodysplastic syndrome international prognostic scoring system
Myocardial infarction probability (Goldman)
Narcotic equivalence converter
Narcotic medication dose conversion
Nasal canula oxygen fractional inspired O2 (FIO2) estimate
Negative predictive value of a test
Neonatal thyroid dysfunction [algorithm]
NHLBI Obesity guidelines
NIH Stroke scale
Non Q wave myocardial infarction prediction
Nonbiliary cirrhosis prognostic criteria for one year survival
Normal range for body weight
Norton scale to stratify risk of pressure sores
NTISS (Neonatal Therapeutic Intervention Scoring System)
Number needed to harm (NNH) from odds ratio (OR) and patient expected event rate (PEER)
Number needed to treat (NNT) from odds ratio (OR) and patient expected event rate (PEER)
Nutricalc, [infant] nutrition calculator
Obesity management guidelines, National Institutes of Health/NHLBI TreeCalc
Odds from probability
Odds ratio and relative risk
Opioid medication dose conversions
OSHA Recordable hearing loss [surveillance algorithms]
Osmolality Estimator (serum)
Osmolar clearance
Osteoporosis Risk Assessment Instrument (ORAI)
Oswestry low back pain disability questionnaire
Ottawa ankle rule for the use of X-ray in ankle injury
Ottawa ankle rules
Ottawa foot rule for the use of X-ray in foot injury
Ottawa foot rules
Ottawa knee rule for the use of X-ray in knee injury
Ottawa knee rules
Oxygenation index
Oxygenation index (OI)
Paediatric coma scale (Simpson & Reilly)
Pancreatitis prognosis criteria
Peak expiratory flow calculator
Peak expiratory flow prediction
Peak expiratory flow variability in asthma
Pediatric dosing calculator
Pediatric fluids and electrolyte therapy
Pediatric trauma score
PELD calculator for ages less than 12
PELOD (Pediatric Logistic Organ Dysfunction) Score
Penetrating abdominal trauma index
Perioperative cardiac evaluation TreeCalc
PICU
PIER
PIM (Pediatric Index of Mortality)
PIM 2 (Pediatric Index of Mortality, revised) [calculator]
Pittsburgh knee rule
Pittsburgh knee rule for X-ray evaluation of knee injury TreeCalc
Pneumonia risk in post operative period of non-cardiac surgery
Pneumonia severity index calculator
Pneumothorax degree of collapse
Polycythemia Vera diagnostic criteria
Positive predictive value of a test
Possible thyroid eye disease
Postpartum thyroiditis diagnosis & management algorithm
Predicting strep pharyngitis
Predicting TB in patients being considered for respiratory isolation
Pregnancy calculator
Preventive screening tests and immunizations guidelines for women [algorithms]
PRISM (Pediatric Risk of Mortality) score
Probability from odds
Probability of acute bacterial sinusitis
Probability of aortic rupture in blunt chest trauma
Probability of pulmonary embolism
Prostatism symptom score
Protein bound calcium
Protocol for scanning with thyrogen
Puff
Pulmonary embolism Wells score
Pulmonary vascular resistance
QT interval correction (EKG)
RAI ablation and therapy cycle [for thyroid cancer algorithm]
Random.org
Rankin Scale for stroke disability
Ranson's criteria for pancreatitis mortality prediction
Ranson's Prognostic factors in acute pancreatitis
Rapid disability rating scale
Rash diagnosis algorithm
Recommended adult immunization schedule United States, October 2006-September 2007
Recommended childhood and adolescent immunization schedule, United States, 2009
Red blood cell volume by radionucleotide dilution
Renal artery stenosis prediction rule
Renal failure index
Residual renal function in hemodialysis patients (3x/week)
Reticulocyte production index
Reynolds Risk score
Rheumatoid arthritis criteria (1987 revision--American Rheumatism Association)
Rhinitis [diagnosis and treatment algorithms]
Risk Assessment Profile (RAP) of Greenfield et al for venous thromboembolism in adult trauma patients
Risk increase / number needed to harm Multicalc
Risk reduction / number needed to treat Multicalc
Risk score for anticoagulant-related major bleeding in hospitalized patients
Romhilt-Estes criteria for left ventricular hypertrophy
Rotterdam Score (Meningococcal septic shock in children) [calculator]
SARS (Severe Acute Respiratory Distress Syndrome) CDC case definition (4/20/2003) TreeCalc
SCORE, simple calculated osteoporosis risk estimation
Screening for adolescent substance abuse using the CRAFFT questionnaire
Screening for Domestic Violence with the HITS (Hurt, Insulted, Threatened, Screamed)
Sensitivity of a test
Serum osmolality
Serum sodium change in hyperlipidemia
Serum sodium change in hyperproteinemia
SI unit conversions. Body fluid chemistries
SI unit conversions. Chemistry values
SI unit conversions. Coagulation tests
SI unit conversions. Drugs
SI unit conversions. Hematology
SI unit conversions. Urine chemistry values
Single thyroid nodule management [algorithm]
Smallpox risk assesment (CDC version 1.0, 2002) TreeCalc
Smoking cessation and intervention TreeCalc
Sodium correction in hyperglycemia
Sodium deficit in hyponatremia
Sore throat (Pharyngitis) evaluation and treatment criteria
Stable coronary artery disease [algorithms]
Stage III pressure ulcer TreeCalc
Stage IV pressure ulcer TreeCalc
STAT Cardiac clearance
STAT Cholesterol
STAT GrowthCharts
Stats calculator (University of Toronto)
Steroid equivalence converter
Stool osmolal gap
Strange thyroid function tests [algorithm for interpretation]
Strep pharyngitis probability score
Suggested algorithm for making decisions about the use of aspirin for primary prevention of coronary heart disease
Suggested management of patients with raised lipid levels TreeCalc
Survey sample size
Survey sample size with population correction
Systemic lupus eythematosis American Rheumatism Association 11 criteria
Systemic vascular resistance
Systolic murmur significance probability
Targeted tuberculin skin test (TST) protocol
Telemakus
Ten year CVD risk calculator
Thyroid cancer patient triage [algorithm]
Thyroid disease screening for fmales more Than 50 years old TreeCalc
TIMI risk score
TIPS Risk predictor/Survival predictor (Transjugular Intrahepatic Portosystemic Shunt)
Top flow
Total body water/urea volume of distribution
Total daily energy requirement estimate
Total lung capacity
TPA for acute stroke, indications/contraindications
TranscriptDetector
Transferrin saturation
Transtubular potassium gradient at CCD
Trauma score for survival probability
Treatment of LTBI
UBC Bayesian calculator
UCLA Pain assessment tools
UCLA-DOE Fold server
UNOS MELD score in liver disease
UNOS PELD score in liver disease [for] patients less than 18 years old
Unstable angina risk stratification
Upper extremity overuse syndrome
UpToDate
Urea reduction percentage in hemodialysis (PRU)
Urea reduction ratio in hemodialysis (URR)
VA/DoD clinical practice guideline for the management of dyslipidemia [algorithms]
Vancomycin & aminoglycoside pharmacokinetics
Vector and Scalar electrocardiography
Ventilation index [calculator]
Very low density lipoprotein (VLDL)
Vital capacity
Volume of distribution of urea
Warfarin dosing TreeCalc
Water deficit in hypernatremia
Waterlow scale for stratification of pressure sore risk
WebFEATURE
Weights & measures
Weights & measures (Medical College of Wisconsin)
What is the correct thyroxine dosage?
Winter's Formula for expected PCO2
Wise2
YMF
YottaLook
Zung self-rating depression scale
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