Quilt Calculator
This one covers the quilt top, which is the part before the backing and the binding. Give it a finished block size and a layout and it returns the finished quilt size, the cut size of every piece, how many sashing strips and cornerstones the grid needs, and how much fabric the blocks, sashing and borders take. A second action works the other way, fitting a block size to a finished quilt size and telling you the border that lands on it. A third splits the yardage between up to three fabrics for a pieced block.