Making quilts is such an individual thing, there are so many variables. It is therefore impossible for us to give accurate measurements.
The easiest way for you to calculate the fabric needed is to first decide how big the quilt should be. This in itself varies between quilt makers as everyone want the quilts to hang at different lengths over their beds.
After you have worked out how big the finished quilt is to be, you need to work out how many of the blocks you will need. The finished block ends up measuring about 1/2 " smaller ( width and length) of the hoop that you use to make the blocks.
We give the fabric requirements for the blocks in the instructions, so after you work out how many finished blocks you need for the quilt you just have to multiply the number by the amount of fabric stated in the instructions.
We also have a blog article with more information here (including an example calculation): https://swpea.me/2018/03/27/how-much-fabric-do-i-need/