Rug size calculator

Big enough that the front legs of every seat sit on it: for a standard 84 inch sofa that means an 8x10 minimum. Keep 8 to 18 inches of visible floor between the rug and the walls as a border. When two sizes fit, the larger one almost always looks better.

An 8x10, placed under the lower two thirds of the bed so it extends 18 to 24 inches beyond each side. That is where your feet land. For a king, step up to 9x12. On a budget, a 2.5x7 runner on each side of the bed does the same job for less.

Your table dimensions plus 48 inches in each direction, so chairs stay on the rug even when pulled out to sit. For most 6-seat tables that means a 9x12. If the right size does not fit your room, skip the rug: bare floor beats chairs falling off the edge.

Yes. A rug over rental carpet defines the space and hides a floor you cannot change. Add a rug pad made for carpet, about 30 to 50 dollars, so the rug does not creep and buckle.