[header] How to measure square footage [title] Break down the area into manageable parts. [step] If you're having trouble finding the square footage, then it's probably because you're not working with a neat area with just one length and one width. The space might have squares jutting off in different places and could be shaped erratically. 
All you have to do is split up the space into even squares or rectangles. To find the square footage, or the area, of the entire space, you'll need to find the square footage of the individual spaces and then add them all together.