My most common size is about 65 X 80 for a donation quilt. Baby quilts are usually 40 X 40 so I don't have to piece the back. For children under age 5 50X60 Of course as mentioned earlier, it may all depend on the pattern. I have done one queen and that was enough. One was for a really tall single nephew and that was EXTRA long but I can't find the final dimensions, finished 2015.Yikes! Time flies