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App Store Apps > Medical > Calculate by QxMD
Calculate by QxMD icon

Calculate by QxMD

by WebMD · Medical · Free
On the App Store since March 2010 · Data updated 2026-10-27

Calculate by QxMD is made and published by WebMD. AppBrain is an independent app data site and isn't affiliated with WebMD. The app name, icon, screenshots and description belong to WebMD and are shown as published on the App Store.

AppBrain's verdict

EstablishedLoved by users
Rating on App Store
4.79
5,107 ratings
Last updated
December 19, 2025
Size
118.2 MB

Users love it: 4.8 stars from 5,107 ratings.

Official page on the App Store

User feedback

Ratings and reviews on the App Store

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Store listing

By WebMD, from the App Store
Calculate by QxMD Screenshot 1 of 5
Calculate by QxMD Screenshot 2 of 5
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Calculate by QxMD Screenshot 5 of 5
Screenshots by WebMD, from the the App Store listing
Description by WebMD Written by the developer, not by AppBrain. Click to read.
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 contact@qxmd.com

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.
Official page on the App Store

Safety and technology

Found in the app by AppBrain
Price
Free
App size
118.2 MB
Content rating
High

Technologies used by Calculate by QxMD

Releases

Updates seen on the App Store
Version
9.5
Launched
March 2010

No changelog data

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Rankings

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This app is not ranked

About the app and developer

About Calculate by QxMD

Calculate by QxMD is a medical app developed by WebMD.

User Ratings

Calculate by QxMD is rated 4.79 out of 5 stars. The rating is based on 5.1 thousand ratings.

App Information

Calculate by QxMD is freely available from the App Store. The app size is 118.23 MB. The latest version available is 9.5. The last update was on December 19, 2025.

Technical Requirements

The app has a content rating of High Maturity. The app has been available on the App Store since March 2010.

Developer information for WebMD

WebMD

Address:

Share Calculate by QxMD

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