Join the millions of medical professionals who use MDCalc daily to support clinical decision making at the bedside. Since 2005, MDCalc has been the leading medical reference for the most relevant, up-to-date, and widely-used clinical calculators that support evidence-based patient care. Registration is free and takes less than 30 seconds for full, unlimited access.

MDCalc is 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 500 easy-to-use clinical decision tools including risk scores, algorithms, equations, diagnostic criteria, formulas, classifications, dosing calculators, and more.

Unique features, ideal for the busy practicing clinician:

• Works offline and in limited connection settings.
• Fast and easy search and filter to discover new calculators.
• Customizable lists for quick access to: favorites, recently used, your specialty.
• Auto-syncing between the website and app.
• Quick toggle between US and SI units.
• Error warnings and normal values to help avoid mistakes and improper inputs.

Our exclusive “MDCalc Method” for selecting tools - including in-depth appraisal and validation of evidence AND clinical relevance - results in only the highest-quality tools to help you make better decisions and be more efficient in your workflow. And our network of academic and practicing physician experts create easy-to-digest content to reinforce decision making and support training:

• Insights and advice from the EBM creators (e.g. Dr. Phil Wells’ on the Wells’ Criteria).
• Expert content by specialists on use cases, pearls & pitfalls, results interpretation, and more.
• Synopses of evidence from the original and validation research.

From iMedicalApps: “The evidence based medicine (EBM) components of the medical app are what really set MDCalc apart from its peers... The MDCalc app gives brief summaries of the critical studies concerning the medical calculator, links to the studies on PubMed as well as “pearls/pitfalls”, “next steps” and expert commentary from the authors of the calculators.” - iMedicalApps “MDCalc app, the best online medical calculator is now an app”

MDCalc clinical decision tools support 50+ specialties including cardiology, critical care/ICU, emergency medicine, endocrinology, gastroenterology, hematology, hepatology, infectious disease, internal medicine, nephrology, neurology, obstetrics, oncology, orthopedics, and more! Here are some examples of the tools:

» CHA2DS2-VASc Score for Atrial Fibrillation Stroke Risk
» Creatinine Clearance (Cockcroft-Gault Equation)
» Wells’ Criteria for Pulmonary Embolism
» MELD Score (Model For End-Stage Liver Disease) (12 and older)
» Calcium Correction for Hypoalbuminemia
» SIRS, Sepsis, and Septic Shock Criteria
» Fractional Excretion of Sodium (FENa)
» Maintenance Fluids Calculations
» Corrected QT Interval (QTc)
» HAS-BLED Score for Major Bleeding Risk
» CHADS2 Score for Atrial Fibrillation Stroke Risk
» Child-Pugh Score for Cirrhosis Mortality
» TIMI Risk Score for UA/NSTEMI
» PERC Rule for Pulmonary Embolism
» Wells’ Criteria for DVT
» Mean Arterial Pressure (MAP)
» Centor Score (Modified) for Strep Pharyngitis
» Absolute Neutrophil Count (ANC)
» Glasgow Coma Scale/Score (GCS)
» CURB-65 Severity Score
» ABCD2 Score for TIA
» Anion Gap
» NIH Stroke Scale/Score (NIHSS)
» HEART Score for Major Cardiac Events
» GRACE ACS Risk and Mortality Calculator
» ASCVD Risk Algorithm
» Ottawa Ankle and Knee Rules

What’s New

Version 3.0.1

Crash fix.

Ratings and Reviews

4.9 out of 5
37.7K Ratings

37.7K Ratings

Lissaly ,

Fixed after deleting and reinstalling

This is one of my favorite apps. I use it all the time for work, and it is definitely a lifesaver. It was having issues after the last update and was crashing upon opening, but after deleting and reinstalling the app, it now works perfectly. Thank you MDCalc team for your assistance!

Developer Response ,

Happy to help! Feel free to reach us at if you have any questions, want to suggest a new calc, or have anything else you want to chat with us about :)

VHouse28 ,

Excellent medical app, but iPad version with huge shortcomings

MDCalc is an excellent medical calculator, with updated literature citations and educational snippets. The iPhone version is stellar however the iPad version has several limitations in function that do not take advantage of the functionality of the iPad and it’s Pro-functionality.

I work on the wards and am frequently using many of the calculations in the App on my new iPad Pro with the magic keyboard. This means I am in landscape mode throughout the day.

Upon opening the app on landscape mode, the app does not rotate whatsoever. Meaning it cannot be used while the iPad is docked. The app also does not take advantage of the iPad OS’s multitasking features like split-view or slide-over, a huge detriment when I am charting on my virtual desktop app and looking to have MDCalc slide-over to briefly calculate a MELD score for example.

The addition of these features to the iPad app would make this a 5/5 app. But until then, it’s unusable for the iPad Pro especially when it is on the Magic Keyboard.

Sleeper243 ,


Thank you!! I have been waiting for this for a a long time. I used to use the website during my residency but the app was missing after explosion of smartphone devices. I really liked their layout and their explanation of the importance of a given calculator with links to reference articles.


MD Aware LLC
190.5 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Frequent/Intense Medical/Treatment Information


  • Wallet

    Get all of your passes, tickets, cards, and more in one place.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

You May Also Like