What's New

In this version we continued fixing minor bugs, and enhanced the app's performance.

Have questions or concerns? Send us an email at [email protected].

App Description

From the developer of 'Read by QxMD', 'The ECG Guide' and 'Pedi STAT' comes 'Calculate', a next-generation clinical calculator and decision support tool, freely available to the medical community.

"We recommend medical users try the free Calculate by QxMD first..."
-from iMedicalApps review "The best free Medical Calculator apps for the iPhone"

'Calculate' highlights tools which impact clinical practice either by simplifying diagnosis, clarifying treatment options or displaying prognosis.

Helping you make decisions, not just calculate numbers...

Features

• Developed by a collaboration of clinician experts from diverse backgrounds
• Point-of-care tools in the areas of cardiology, internal medicine, primary care, nephrology, hematology, hepatology, gastroenterology, emergency medicine, oncology, orthopedics, critical care/ICU, ENT, radiology, rheumatology, mental health, respirology, neurology, pediatrics, infectious disease, neurosurgery, general surgery, vascular surgery, and obstetrics.
• Converts recent research publications into practical handheld tools - knowledge translation at its best
• Automatically adapts to your clinical practice
• Unique ‘Question Flow’ technology gets you answers, fast
• Detailed references with PubMed & Read integration
• Comprehensive and insightful results
• Elegant design and intuitive interface
• SI and Imperial units

More than 200 unique calculators and decision support tools

While too extensive to list them all, here is a small sampling of included content:

Guide treatment

• Determine cardiovascular risk using ACC/AHA, Framingham, Gupta and VQI Cardiac Risk Index
• CHADS2 & CHA2DS2-VASc to guide treatment in atrial fibrillation
• Understand bleeding risk in atrial fibrillation using HAS-BLED & OBRI
• TIMI risk score in ACS
• CIWA in alcohol withdrawal
• Rule of 9s & Parkland formula in burns
• Water deficit in hypernatremia
• Timing of surgery with Aortic Stenosis Risk Score
• Risk stratify pneumonia (CURB-65, PORT)
• NIH Stroke Scale in acute stroke
• Imaging in possible subarachnoid hemorrhage with Ottawa SAH Rule

Determine Prognosis

• Cirrhosis (MELD, Child-Pugh)
• Chronic Kidney Disease (Kidney Failure Risk Equation)
• Heart failure
• Lymphoma (NCCN-IPI, IPI24, R-IPI)
• Myelodysplastic Syndrome (IPSS-R, WPSS)
• Myeloma (ISS, R-ISS)
• Hemodialysis
• COPD (Bode)
• Pancreatitis (BISAP, Ranson's)
• Cardiac surgery (Euroscore II, Cleveland Clinic, Mehta)
• Critical care (APACHE II, SOFA)
• Neurologic outcome (DRAGON, CAM-ICU, modified Rankin, FOUR score, Hunt & Hess)

Calculate

• Ideal body weight, BMI and BSA
• Due date and gestational age
• Extensive formula used in echocardiography and invasive hemodynamic monitoring
• Kt/V in dialysis patients
• eGFR with CKD-EPI, MDRD & Schwartz
• A-a gradient

Classify

• Angina (CCS)
• Congestive heart failure (NYHA)

Screen

• Diabetes
• Breast cancer

Reduce and predict perioperative complications

• WHO Surgical Safety Checklist
• Predictive models for cardiac surgery, vascular surgery and coronary angiography
• Postoperative Respiratory Failure Risk score

Manage

• Head, neck, ankle and knee injuries (NEXUS, Ottawa ankle/knee, Canadian C-spine and CT head rules)
• DVT and PE (PERC, Wells, PESI)
• Pulmonary nodules
• TIA (ABCD2)

Stage

• Lung cancer
• Renal cell carcinoma
• Head & neck cancers

Understand

• TTKG in hypokalemia and hyperkalemia
• Dermatomes

Diagnose

• Heparin Induced Thrombocytopenia
• Infective Endocarditis
• ARDS
• Autoimmune Hepatitis
• Sleep disorder (Epworth Sleepiness Scale)

And much, much more...

Researchers, contact us to see your research in our app at [email protected]

Founded my medical professionals, QxMD Software is dedicated to creating high quality, point-of-care tools for practicing health care professionals. Recognized as a leading developer of free medical software for mobile devices, QxMD develops content in cooperation with expert physicians from their respective fields.

iPhone Screenshots

(click to enlarge)

Calculate by QxMD screenshot 1 Calculate by QxMD screenshot 2 Calculate by QxMD screenshot 3 Calculate by QxMD screenshot 4 Calculate by QxMD screenshot 5

iPad Screenshots

(click to enlarge)

Calculate by QxMD screenshot 6 Calculate by QxMD screenshot 7 Calculate by QxMD screenshot 8 Calculate by QxMD screenshot 9 Calculate by QxMD screenshot 10

App Changes

  • June 24, 2011 New version 2.1.1
  • August 06, 2011 New version 2.2
  • August 12, 2011 New version 2.2.1
  • September 22, 2011 New version 2.3
  • December 17, 2011 New version 2.4
  • March 22, 2012 New version 2.5.1
  • March 28, 2012 New version 2.5.3
  • April 19, 2012 New version 2.7.2
  • June 18, 2012 New version 2.8.2
  • October 06, 2012 New version 2.9.2
  • October 17, 2012 New version 2.9.3
  • January 15, 2013 New version 2.10
  • February 01, 2013 New version 3.0.2
  • February 09, 2013 New version 3.1
  • June 15, 2013 New version 3.5.3
  • September 20, 2013 New version 3.7
  • November 12, 2013 New version 4.0
  • December 05, 2013 New version 4.1
  • February 09, 2014 New version 4.2
  • February 11, 2014 New version 4.3
  • February 19, 2014 New version 4.4
  • May 19, 2014 New version 5.1
  • September 21, 2014 New version 5.1.2
  • October 05, 2014 New version 5.1.3
  • January 08, 2015 New version 5.2
  • January 27, 2015 New version 5.3
  • April 15, 2015 New version 5.4
  • June 14, 2015 New version 5.5
  • November 09, 2015 New version 5.6
  • March 13, 2016 New version 6.0
  • March 16, 2016 New version 6.1
  • March 25, 2016 New version 6.2
  • June 30, 2016 New version 6.4
  • November 07, 2016 New version 6.6
  • June 13, 2019 New version 7.0.12
  • October 05, 2019 New version 7.1.0
  • October 09, 2019 New version 7.1.1
  • October 15, 2019 New version 7.1.2
  • October 21, 2019 New version 7.1.3
  • October 28, 2019 New version 7.1.4
  • December 10, 2019 New version 8.0.0
  • January 07, 2020 New version 8.0.1
  • January 21, 2020 New version 8.0.2
  • July 14, 2020 New version 8.5.0
  • October 23, 2020 New version 8.9.0
  • November 12, 2020 New version 8.10.2
  • December 10, 2020 New version 8.12.0
  • August 06, 2021 New version 8.15.1
  • September 15, 2023 New version 9.2.1

Other Apps From WebMD Health Corporation

WebMD: Symptom Checker Medscape ECG Guide WebMD for iPad theheart.org WebMD Magazine WebMD Baby WebMD Pain Coach ADDitude Magazine WebMD Allergy Medscape MedPulse Read by QxMD WebMD Pregnancy Medscape Business of Medicine Medscape CME & Education WebMDRx - Prescription Drug Savings Medscape - Video on Demand Medscape LIVE!