In order to measure window sizes, it's important to consider parts of the window that may be covered by other materials. Use a tape measure to determine the size of a window with help from a home repair specialist and remodeling contractor in this free video on measuring windows.

## Video transcription

Hi I'm Tim Gipson, I'm going to talk to you about how to measure window sizes. Now we want to measure and determine the size of this window we got to measure the width and the height. Now there's some things that we got to look at when we're actually looking at this window. Part of this window is covered by the Sheetrock on each side and the Sheetrock on the top and then also the sill on the bottom. Now typically Sheetrock will be a half inch thickness so we know that whatever the size of this window is, we're going to have to add an inch to whatever we measure side to side because of the half inch Sheetrock on each side and then we're also going to have to add an inch and a quarter for the half inch Sheetrock here and the three quarter inch sill that's on the bottom. And to determine the size what we want to do because there may be some variations in the plum, how plum these sides are, we want to take our measurements at three points. So at the bottom, at the middle and then at the top. And then what we want to do is it's always better to guess a little smaller particularly if you're looking at replacement windows or something like that. So we want to take the smallest dimension. So the smallest dimension I got from taking those three points is 35 and a quarter. I can add that inch on because of the half inch Sheetrock on each side so I get 36 and a quarter. So and typically windows will come in a standard size and 36 would be a standard size. So at that point I just round and say this is a 36 inch window. And then I would do the same thing for the height and measure the height and as I go through here I get 71 and so I'm going to add about an inch to that and again height of windows come in standard sizes so there are 60, 64, 66, so usually round numbers. So I can pretty much guesstimate that this window is a 72 inch window by the time I add the dimension for the sill and then the dimension for the Sheetrock at top. So by taking your measurements at three points and kind of determining take into account your Sheetrock and the sill, I determine that this is a 36 inch by 72 inch window which would be pretty much a standard size. So I'm Tim Gipson and that's how to find out the size or measure for the size of your window.