Calculate (Medical Calculator) by QxMD Medical App Review (iOS, Free)


Languages: English

Seller: QxMD Software Inc.

- added: ACC/AHA CV Risk Calculator
- added: Asymptomatic ICA (Internal Carotid Artery) Stenosis Surgical Risk Stratification

Customer Ratings

All Versions:
2046 Ratings


From the maker of the apps 'Read', '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' is focused on highlighting tools which are actually useful in clinical practice and serve to impact diagnosis, treatment or determining prognosis.

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


• Developed by a collaboration of clinician experts from diverse backgrounds
• Point-of-care tools in the areas of cardiology, internal medicine, nephrology, general practice, hematology, gastroenterology, emergency medicine, oncology, orthopedics, respirology, neurology, neurosurgery, general surgery and obstetrics.
• Converts recent research publications into practical handheld tools - knowledge translation at its best
• Automatically adapts to your self-described clinical practice
• Unique ‘Question Flow’ technology gets you answers, fast
• Detailed references with Pubmed integration
• Comprehensive and insightful results
• Elegant design and intuitive interface
• SI and Imperial units

More than 150 Unique calculators and Decision Support tools

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

Reduce and predict perioperative complications

• WHO Surgical Safety Checklist
• Predictive models for cardiac surgery and coronary angiography

Guide treatment

• Determine cardiovascular risk and guide lipid treatment using the Framingham and Reynolds Risk Scores
• Use the CHADS2 score to guide treatment in atrial fibrillation
• Better understand the risk of bleeding from anticoagulation in atrial fibrillation
• ACS using the TIMI risk score
• Burns with rule of 9s and Parkland formula
• Hypernatremia (calculate water deficit)

Determine Prognosis

• Heart failure
• Lymphoma
• Myelodysplastic Syndrome
• Myeloma
• Glomerulonephritis
• Hemodialysis
• Pancreatitis


• Chemotherapy based on Body Surface Area
• Carboplatin based on AUC
• tPA in acute stroke
• Phenytoin in renal failure and hypoalbuminemia


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

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

• Head, neck, ankle and knee injuries
• DVT and PE
• Pulmonary nodules

• Lung cancer
• Renal cell carcinoma

• TTKG (transtubular potassium gradient) in hypokalemia and hyperkalemia
• Dermatomes

• Heparin Induced Thrombocytopenia
• Infective Endocarditis
• Autoimmune Hepatitis

And much, much more...

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.

Customer Reviews

  • Qx

    by tony836723691

    Very comprehensive Makes life so much easier on the office

  • Great Calculator

    by Crazy for Banff

    Better than most calculators I have used. Please consider adding Calgary syncope score and Goldman Pre-operative Risk score.

  • Love this!

    by Anishah Khan


  • Excellent

    by Epsdog

    1.Please add to AFib - the ATRIA stroke risk score And as previously requested include: 2.HATCH score to predict profession of parox to persistent AFib (jacc 2010, crijns)

  • Must have app

    by Reidksmith

    Accurate and in depth explanations of calculations, easy to use interface, comprehensive and organized list of calculations. Must have app for students and residents.

  • Great app

    by Papanoel81

    Very useful app for the nephrologist.

  • Love the app

    by charesepel

    Use it frequently. Full of information from the common the rare and uncommon. Very handy App!

  • Open articles in PDF expert would be great

    by slc2233

    Like the app but hate e mailing myself the article. Would be great if could send the article directly into my PDF reader app from inside this app.

  • Awesome app

    by Ebp123....

    Very useful

  • Muy buena

    by Derek Barragan

    Muy útil y práctica, excelente!

  • gamilgamal

    by Gamilgamal

    broad spectrum helpful app when you need it

  • Great App

    by Fesghool

    It is a very useful app especially when I am in rush.

  • Great app

    by Youhfubvfh

    Highly recommended

  • Great Software for MD practice

    by WI Lipid Doc

    Great program, works straight forward. I use this program on a regular basis. No problems ever on either iPhone or Droid platforms

  • Great app

    by DJ Flexure

    Best calc app

  • MD

    by Zhhemd

    Excellent apps, useful for daily practice. Hope that they will expand the coverage for more sub specialty detailed scoring systems.

  • Homer

    by Homeslice777


  • Great

    by Jdhgsgsvsv

    Very useful app for third year. User friendly, fast. Please add urine output/fluid requirements for peds and adults.

  • Increased my productivity by like 100%

    by Robert0001

    Wow why didn't I get this sooner!? Definite must for any pharmacist.

  • Awesome app

    by Magendie

    I love this app! Useful, practical, relevant.

  • Great app

    by Andre Hideki Takahashi

    Great app

  • Crashes

    by Esr86

    Can't open since update

  • Crashing

    by S Blake Spiegel

    Auto-updated and now crashes at open. Needs quick fix, ASAP

  • Crashes

    by Medical person

    Won't open without crashing despite just updating the app

  • Crashes

    by Barcle101

    New update won't open, crashes.

  • Amazing

    by gonsos0328

    Awesome app

  • Great!

    by Babsai

    Please name the specific score or source of these computations

  • Pretty good

    by Eeeee9876

    Very nice interface, clean, ads aren't too bothersome. I use it a lot but occasionally will look for scales to calculate and be unable to find them like the APACHE II. It's also *very* deficient for standard psychiatry scales like SLUMS, mini-mental status, PHQ-9, and other scales that all med students and many physicians from multiple specialties use routinely.

  • Use this pretty often

    by Aljor77

    I've got a couple of medical calculators, this and Mediquations. Would recommend getting both as sometimes one has an equation you need, but not the other.

  • Awesome

    by SaberKhan

    I got it by recommendation of Terry shaneyfelt on you tube channel.its great & has all features for researchers & Med students to drool over .keep up the good work guys & Thank You

  • Awesome For Stat Analysis!

    by Wildstar20

    Great for if you need to calculate anything in your practice and/or discipline of medicine. Awesome app!

  • Experience

    by Blizzard1234

    Just a great apps

  • Great

    by Odyiifo

    Helps in surgery

  • MD

    by Vidya Ponnathpur

    Excellent app. The best I have used so far. Thank you

  • Good app

    by Kennyy 40

    Very comprehensive!!!

  • PA-C

    by sBoy'sGirl

    Great application... It is most expeditious means of reviewing a patient's risk for CAD at the time of a visit.. patients are very satisfied.

  • Nice

    by Adil-adnan

    I m dr adil I do love these programs thanks for your efforts

  • Amazing App

    by Sergio Enderica Gonzalez

    Great app! Easy to use!

  • MD

    by Michael gil

    Good app; very useful

  • MD

    by Sonytribunita

    Great App

  • Dr

    by Drpepejimenez

    Great program

  • Love it

    by Letty720

    Truly helpful when Im cooking in the kitchen and when Im at work converting meds

  • EMS Instructor

    by VinceMontefusco

    Handy guide

  • resident

    by mharsrtth

    I found the one! The best companion so far in my daily tour with suffering patients

  • QX

    by T J H*

    Good study tool.

  • Sit

    by Mohamed738

    Thanks allot ever body

  • Awesome app!

    by PharmDs

    Cool oncology calculators.

  • Great for any practice

    by Madrosa

    Great tool for any practice. Great cardiology tools!

  • Very good

    by M.Omer

    Very useful

  • Amazing app

    by Dr.Singh

    Nephrology fellow

  • Great app

    by ('•_•')

    Awesome app to assist in assessing risk factors/scores in your patients.

  • QX calculate

    by Hospital NP

    I have been using QX calculate extensively while working for the Hospital Medicine Service. The app runs well. The calculations are useful and easy to use. Definitely recommend this app for professionals taking care of Medicine patients.

  • great app for calcs needed stat

    by dr.spanky

    Only been using the app for 2 wks but my associates are very interested in adding the app. jfh

  • Medical Calc

    by Havergan

    Great little app. As a surgical PA I use it quite often. It's a time saver.

  • Great

    by schubiedoo

    Er resident use it fair amount very useful

  • Review

    by Mahajanajoud

    Great tool and very practical

  • Pretty good

    by Glych

    It operates fairly well. I might have categorized things a bit differently, and included other popular formulas. Yet it is still very useful.

  • View More


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