Choosing the right size rug depends on the size of the room and the furniture placement. Here are some general guidelines from the search results:

• For a living room, typical rug sizes are 8x10 and 9x12. The rug should be at least 6 inches wider than the sofa on both sides. Ideally, all furniture should rest on the rug, or at least the front legs. If the living room is 12x18 or larger, a 9x12 rug should be the perfect size. If the living room is smaller than 11x13, try a 6x9 rug.

• For a bedroom, a rug should extend at least 18 inches from the sides and foot of the bed. A general guideline is to use an 8x10 rug for a queen bed and a 9x12 rug for a king bed. However, the rug size should be proportionate to the room size.

• For hallways and foyers, rug size is determined based on how much floor space to leave exposed around the edges of the room. For larger areas, a bit more of the floor can show; usually anywhere from 12 inches up to 24 inches. For smaller areas, decrease that amount; six or eight inches should be enough.

• To get a sense of how a rug will feel in a space, measure out the desired rug size with painters tape.

Remember that these are just general guidelines, and the best rug size ultimately depends on the specific room and furniture placement.