I am making a map for a modern day game my DM is running, and I have an architectural image of a floor plan with listed square footage.
For a D20 Modern's 5ft grid, how would I figure out how many squares fit in an area to make it realistic? For instance, I have an area of 241 sq.ft. So how many squares would I fit in there and how would I find this information for other sq.ft.? I'm using GIMP to make the grid, if it matters. Would I just divide the 241 into 5 to find my area?