 In this video, we'll be walking through how to calculate out the square mill area, your SMA of a conductor, and then convert it to CMA if you need to. So what we have here is your basic bus bar. This one is two inches by one quarter inch. So we are going to need to convert these to mills first, but in order to do that, we need to get rid of our fraction here, so we need to convert that to a decimal. Quarter inch equals 0.25 inches. Then we can go ahead and convert these into mills. Two times a thousand is two thousand mills. Point two five times a thousand is two hundred and fifty mills. Now to get the SMA or the square mill area of this bus bar, we just multiply two hundred and fifty times two thousand. That gives us five hundred thousand SMA. Now if we want to convert this to CMA to see what the CMA equivalent of this bus bar would be, we can go ahead and use this conversion. CMA equals SMA divided by 0.7854, or if you want to convert from SMA to the CMA to SMA, you're going to take SMA is equal to CMA times 0.7854. One way to remember that is your square mill area is smaller, so you're going to multiply it by the decimal because you're going to get a smaller number, SMA smaller. There you go. So looking back at our example here, we're going to take our SMA, which is five hundred thousand SMA, and divide it by 0.7854, and that gives us a CMA of six hundred and thirty six thousand six hundred and eighteen point three CMA, and that would be the CMA equivalent of this SMA.