I can't do math so I used to just guesstimate how many blocks I could get from a fabric. Not such a good strategy when I'm using fabrics I got from thrift stores so there's no way I can run back to the store and get more if I run out. Case in point. Those longer side blocks? I needed 97 of them. I cut 90. Then with lots of strips about 1 to 2 inches wide, I managed to cobble together the remaining seven. But it's not gonna be a pretty sight.
So either be good at math, or use an online quilt calculator like lazy old me. :)
For a closer look at the fabric prints, click here.