Figure the top of the bed area and add drop for sides, and foot (if you need the foot). I found the quilts that are going on a bed that has a footboard are too cumbersome to get the quilt between the footboard and the mattress. Some like the sides to go down to the floor and others want to use a dust ruffle. Your choice. PS Don't forget to add the drop on both sides. Ask me how I know!!!!!!