No1 medical calcultaors  created exclusively by board-certified physicians for use by physicians, physician assistants, nurse practitioners, pharmacists, and medical students. The simple yet sleek app provides access to more than 270 easy-to-use clinical decision tools including risk scores, algorithms, equations, formulas, classifications, dosing calculators, and more.

the app include the following medical calculators

Cardiology calculators

Clinical Criteria

Calculator: 10 year risk of developing cardiovascular disease in men (Patient information)

Calculator: 10 year risk of developing cardiovascular disease in women (Patient information)

Calculator: Atrial fibrillation CHADS(2) score for stroke risk

Calculator: Framingham 10 year risk of general cardiovascular disease in men (2008 paper)

Calculator: Framingham 10 year risk of general cardiovascular disease in women (2008 paper)

Calculator: Thrombolysis in Myocardial Infarction (TIMI) score for ST elevation acute myocardial infarction

Calculator: Thrombolysis in Myocardial Infarction (TIMI) score for unstable angina or non ST elevation myocardial infarction

Medical Equations

Calculator: Cardiac Output

Calculator: Friedewald Equation for Low Density Lipoprotein (LDL-C)

Calculator: Friedewald Equation for Low Density Lipoprotein (LDL-C, SI units)

Calculator: Lean body weight (adult female)

Calculator: Lean body weight (adult male)

Calculator: Pulmonary Vascular Resistance

Calculator: QT Interval Correction (EKG)

Calculator: Systemic Vascular Re      

Critical care calculators

Medical Equations

Calculator: Ideal body weight (method of Devine) and dosing weight for adults

Calculator: Lean body weight (adult female)

Calculator: Lean body weight (adult male)

Calculator: Right to Left Shunt Fraction Qs/Qtsistance

Emergency med calculators

Medical Equations

Calculator: Adult burn injury fluid resuscitation (Parkland crystalloid estimate)

Calculator: Blood ethanol concentration estimation

Calculator: Endotracheal tube size for children (Age 1 to 8 years)

Calculator: Ideal body weight (method of Devine) and dosing weight for adults

Calculator: Lean body weight (adult female)

Calculator: Lean body weight (adult male)

Endocrinology calculators

Medical Equations

Calculator: Body mass index (BMI; Quetelet’s index)

Calculator: Body mass index for adults (Metric, Patient information)

Calculator: Body mass index for adults (Patient information)

Calculator: Calcium correction in hypoalbuminemia

Calculator: Calcium correction in hypoalbuminemia (SI units)

Calculator: Glycemic assessment

Calculator: Lean body weight (adult female)

Calculator: Lean body weight (adult male)

Gastroenterology and Hepatology calculators

Clinical Criteria

Calculator: Blatchford score for gastrointestinal bleeding

Calculator: Child Pugh classification for severity of liver disease

Calculator: Child Pugh classification for severity of liver disease (SI units)

Calculator: Crohn’s disease activity index (CDAI)

Calculator: Glasgow alcoholic hepatitis score

Calculator: Harvey-Bradshaw index of Crohn’s disease activity

Calculator: Hepatitis discriminant function for corticosteroid therapy in alcoholic hepatitis

Calculator: Mayo score for assessing ulcerative colitis activity

Calculator: Ranson criteria for pancreatitis prognosis

Calculator: Rockall score for upper gastrointestinal bleeding

Medical Equations

Calculator: Bedside Index of Severity in Acute Pancreatitis (BISAP) score

Calculator: MELD score for end-stage liver disease (not appropriate for patients under the age of 12)

Calculator: MELD score for end-stage liver disease (not appropriate for patients under the age of 12) (SI units)

Calculator: MELDNa score for end-stage liver disease (not appropriate for patients under the age of 12)

Calculator: MELDNa score for end-stage liver disease (not appropriate for patients under the age of 12) (SI units)

Calculator: Mortality risk in post-operative patients with cirrhosis

Calculator: PELD score for end-stage liver disease (patients less than 12 years old)

Calculator: Stool osmolal gap

General surgery calculators

Clinical Criteria

Calculator: Clinical indicators for malignant hyperthermia

Calculator: Mangled Extremity Severity Score (MESS)

Calculator: Pressure ulcer risk stratification (Braden score)

Calculator: Venous clinical severity score

Calculator: Venous segmental disease score for obstruction

Calculator: Venous segmental disease score for reflux

Calculator: Villalta score for severity of post-thrombotic syndrome

Medical Equations

Calculator: Ideal body weight (method of Devine) and dosing weight for adults

Calculator: Lean body weight (adult female)

Calculator: Lean body weight (adult male)

Hematology calculators

Clinical Criteria

Calculator: DVT probability: Wells score system

Calculator: International Prognostic Index for non-Hodgkin lymphoma

Calculator: International Prognostic Score in Hodgkin Lymphoma

Calculator: MDACC Myelodysplastic syndrome prognostic model

Calculator: Myelodysplastic syndrome international prognostic scoring system (Original IPSS)

Calculator: Polycythemia vera diagnostic criteria (Original PVSG diagnostic criteria)

Calculator: Revised International Prognostic Scoring System (IPSS-R) in myelodysplastic syndrome

Calculator: Sokal score for chronic myeloid leukemia

Medical Equations

Calculator: Absolute neutrophil count

Calculator: Mantle Cell Lymphoma International Prognostic Index (MIPI)

Hospital medicine calculators

Clinical criteria

Calculator: APACHE II scoring system

Calculator: CIWA-Ar Clinical Institute Withdrawal Assessment for Alcohol scale

Calculator: Clinical indicators for malignant hyperthermia

Calculator: Community-acquired pneumonia severity index (PSI) for adults

Calculator: DVT probability: Wells score system

Calculator: Diagnosis of endocarditis – Duke criteria for definite endocarditis

Calculator: Pressure ulcer risk stratification (Braden score)

Calculator: Pulmonary embolism Wells score

Calculator: Thrombolysis in Myocardial Infarction (TIMI) score for ST elevation acute myocardial infarction

Calculator: Thrombolysis in Myocardial Infarction (TIMI) score for unstable angina or non ST elevation myocardial infarction

Calculator: Venous clinical severity score

Medical equations

Calculator: A-a gradient (alveolar-arterial gradient; AaG)

Calculator: Absolute neutrophil count

Calculator: Adult burn injury fluid resuscitation (Parkland crystalloid estimate)

Calculator: Body Surface Area (Mosteller, square root method)

Calculator: Body mass index (BMI; Quetelet’s index)

Calculator: Calcium correction in hypoalbuminemia

Calculator: Calcium correction in hypoalbuminemia (SI units)

Calculator: Cardiac Output

Calculator: Corticosteroid Medication Dosing Conversions (glucocorticoid effect)

Calculator: Creatinine clearance (measured)

Calculator: Creatinine clearance estimate by Cockcroft-Gault equation

Calculator: Creatinine clearance estimate by Cockcroft-Gault equation (SI units)

Calculator: Fractional excretion of sodium

Calculator: Fractional excretion of sodium (SI units)

Calculator: Glomerular filtration rate estimate by Schwartz formula

Calculator: Glomerular filtration rate estimate by abbreviated MDRD study equation

Calculator: Lean body weight (adult female)

Calculator: Lean body weight (adult male)

Calculator: Nasal Canula Oxygen Fractional Inspired O2 (FIO2) Estimate

Calculator: Oxygenation index

Calculator: Peak Expiratory Flow Prediction

Calculator: Pulmonary Vascular Resistance

Calculator: QT Interval Correction (EKG)

Calculator: Serum osmolal gap

Calculator: Serum osmolal gap (SI units)

Calculator: Systemic Vascular Resistance

Calculator: Urinary protein excretion estimation

ID calculators

Clinical Criteria

Calculator: CURB-65 pneumonia severity score

Calculator: Community-acquired pneumonia severity index (PSI) for adults

Calculator: Diagnosis of endocarditis – Duke criteria for definite endocarditis

Calculator: Multinational Association for Supportive Care in Cancer (MASCC) risk index for patients with neutropenic fever

Medical Equations

Calculator: Ideal body weight (method of Devine) and dosing weight for adults

Nephrology calculators

Medical Equations

Calculator: Creatinine clearance (measured)

Calculator: Creatinine clearance estimate by Cockcroft-Gault equation

Calculator: Creatinine clearance estimate by Cockcroft-Gault equation (SI units)

Calculator: Fractional excretion of magnesium

Calculator: Fractional excretion of magnesium (SI units)

Calculator: Fractional excretion of sodium

Calculator: Fractional excretion of sodium (SI units)

Calculator: Glomerular filtration rate estimate by CKD-EPI equation

Calculator: Glomerular filtration rate estimate by abbreviated MDRD study equation

Calculator: Kt/V Dialysis Dose Daugirdas Formula

Calculator: Lean body weight (adult female)

Calculator: Lean body weight (adult male)

Calculator: Residual Renal Function in Hemodialysis Patients (Kru)

Calculator: Serum anion gap

Calculator: Serum osmolal gap

Calculator: Serum osmolal gap (SI units)

Calculator: Urinary protein excretion estimation

Calculator: Urine anion gap

Neurology calculators

Clinical Criteria

Calculator: Apgar score

Calculator: Epworth Sleepiness Scale (ESS)

Calculator: Stroke Risk in Female Patients 55-84 Years Old (Framingham data)

Calculator: Stroke Risk in Male Patients 55-84 Years Old (Framingham data)

Obstetrics calculators

Medical Equations

Calculator: Estimated Date of Delivery (EDD)

Calculator: Estimated Date of Delivery (EDD) (Patient information)

Calculator: Gestational age from Estimated Date of Delivery (EDD)

Oncology calculators

Medical Equations

Calculator: Body Surface Area (Du Bois Method)

Calculator: Body Surface Area (Mosteller, square root method)

Calculator: Lean body weight (adult female)

Calculator: Lean body weight (adult male)

Pediatrics calculators

Clinical Criteria

Calculator: Apgar score

Calculator: Newborn hyperbilirubinemia assessment

Medical Equations

Calculator: Blood pressure percentiles for boys (2 to 17 years)

Calculator: Blood pressure percentiles for girls (2 to 17 years)

Calculator: Body Mass Index (BMI) percentiles for boys (2 to 20 years)

Calculator: Body Mass Index (BMI) percentiles for girls (2 to 20 years)

Calculator: Body Surface Area (Mosteller, square root method)

Calculator: Body mass index for boys (Patient information)

Calculator: Body mass index for girls (Patient information)

Calculator: CDC height for age percentiles for boys (2 to 20 years)

Calculator: CDC height for age percentiles for girls (2 to 20 years)

Calculator: CDC weight for height percentiles for boys (77 to 121 cm tall)

Calculator: CDC weight for height percentiles for girls (77 to 121 cm tall)

Calculator: CDC/NCHS infant head circumference for age percentiles (<36 months)

Calculator: CDC/NCHS infant length for age percentiles (<36 months)

Calculator: CDC/NCHS infant weight for age percentiles (<36 months)

Calculator: CDC/NCHS infant weight for length percentiles (<36 months)

Calculator: Glomerular filtration rate estimate by Schwartz formula

Calculator: Maintenance fluid calculation for children

Calculator: Mid-parental target height prediction

Calculator: PELD score for end-stage liver disease (patients less than 12 years old)

Calculator: WHO Assessment of Malnutrition in Boys 0 to 2 Years Old

Calculator: WHO Assessment of Malnutrition in Boys 2 to 5 years Old

Calculator: WHO Assessment of Malnutrition in Girls 0 to 2 Years Old

Calculator: WHO Assessment of Malnutrition in Girls 2 to 5 years Old

Calculator: WHO Infant Head Circumference for Age Percentiles (< 24 months)

Calculator: WHO Infant Length for Age Percentiles (< 24 months)

Calculator: WHO Infant Weight for Age Percentiles (< 24 months)

Calculator: WHO Infant Weight for Length Percentiles (< 24 months)

Primary care calculators

Clinical Criteria

Calculator: Alcohol consumption screening AUDIT questionnaire (Patient information)

Calculator: CIWA-Ar Clinical Institute Withdrawal Assessment for Alcohol scale

Calculator: International Prostatism Symptom Score (IPSS)

Medical Equations

Calculator: Lean body weight (adult female)

Calculator: Lean body weight (adult male)

Calculator: Post Test Probability from Pre Test Probability, Sensitivity and Specificity

Calculator: Post-test probability from likelihood ratios and multiple test results

Calculator: SI unit conversions for immunology lab values

Pulmonology calculators

Clinical Criteria

Calculator: APACHE II scoring system

Calculator: BODE Index for COPD survival prediction

Calculator: Epworth Sleepiness Scale (ESS)

Calculator: Pulmonary embolism Wells score

Medical Equations

Calculator: A-a gradient (alveolar-arterial gradient; AaG)

Calculator: Diffusing capacity for carbon monoxide (DLCO) corrected for anemia

Calculator: Epoprostenol (Flolan) Infusion Rate Calculator

Calculator: In-Flight PaO2 Estimation

Calculator: In-Flight PaO2 Estimation (using PFT’s)

Calculator: Nasal Canula Oxygen Fractional Inspired O2 (FIO2) Estimate

Calculator: Oxygenation index

Calculator: Peak Expiratory Flow Prediction

Rheumatology calculators

Clinical Criteria

Calculator: Rheumatoid arthritis Clinical Disease Activity Index (CDAI)

Calculator: Rheumatoid arthritis Disease Activity Score (DAS-28)

Calculator: Rheumatoid arthritis Simplified Disease Activity Index (SDAI)

Medical Equations

Calculator: Corticosteroid Medication Dosing Conversions (glucocorticoid effect)

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