Well medbloggers, the time is here. Readers, meet MDCalc, The Clinical Calculator . MDCalc , meet the readers. MDCalc is a free website to help you do the medical calculation grunt work.

I got tired of wading through Google searches to find a calculator for all those medical calculations that you often have to use, but don’t use often enough to remember: the A-a O ₂ Gradient , the Calcium Correction in Hypoalbuminemia , the FENa , the MDRD . And countless others. (Easy ones, too, including the BMI and a patient age calculator .) I’m going for the Guiness Book of World Records, Most Medical Equations on One Website.

I’ve also included a number of scores and risk calculations, including the Framingham Cardiak Risk , the PORT Score/Community-Acquired Pneumonia Severity Scale Ranson’s Criteria for Pancreatitis and the Strep Pharyngitis Probability Score . Not to mention the TIMI Scores .

You can even download the equations to your PDA .

So please try out the site, and tell me what you like, what you don’t, and what I’m missing. Feedback is greatly appreciated! And if you feel like it’s worth a link, please link to it on your blog!

(Special thanks to those who volunteered to help test!)

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