How do I move a selection to a specific XY position within the canvas in Photoshop?
Currently, the only way I can find is to just eyeball it with the guides and/or mouse position. I want to specify the exact X and Y coordinates.
With your active selection, go to Edit » Free Transform. This is the same as pressing Ctrl-T on Windows, or Cmd-T on OS X.
Then, in the toolbar above your image, select the angle point where you want to set the coordinates. In my example, it is the center of the selection.
Now, enter the X and Y coordinates you want your selection to be at. If you want to move your selection relative to the previous location, toggle the triangle button.
Hit Enter or click the "Commit transform" button (which looks like a checkmark).
did you turn on the rulers? then set them for pixels. http://www.itechies.net/tutorials/photoshop/index-pid-ruler.htm
With your selection active, go to the menubar and choose Select > Transform Selection, then in the toolbar you'll have access to the transform numeric entry fields for X/Y position, width/height dimensions, and so on.