OpenEuphoria

Well, they only get calculated once, when the program starts up. And of course, translated programs don't calculate them at all. The main reason I do it this way is that some numbers are easier to remember than others. I remember 25.4 and 304.8 better than 0.0393700787 and 3.2808399 respectively. Also, sometimes I do it this way as it explains the magic number better.