The standard size of an area rug for a dining room is 4 feet by 6 feet. If the dining table is of a standard size, that is 42 inches by 64 inches, a rug that is 8 feet by 10 feet is more suitable.
A standard 4 feet by 6 feet rug placed beneath the dining table effectively separates the dining and living areas. If the apartment has an open plan or a larger area, the size of the rug can be increased to 6 feet by 9 feet or 8 feet by 10 feet.
The rug dimensions chosen for a dining room depend on several factors, such as the size of dining table and the dining space and the shape of the dining table.