When figuring the size of your rug, consider the size of your room and your decorating tastes. How much floor space do you wish to show?
Would you like your furniture on the rug for a warm feeling?
Would you prefer your furniture off your rug for a crisper look?
A small area rug can provide a focal point.
When placing a rug under a dining table, remember to leave enough room so that the chair legs remain on the carpet when pulled out. About two and a half feet beyond each dimension of the table should leave enough room.
A room-size rug sets the ambience for the room.
Don't forget comfort too - for example, installed broadloom in a bedroom, hallway, or family room insulates while creating a comfortable place to relax and play.