What kind of table? How big is the room? What other furniture is in the room? Do you have a floor plan of the room you can post here?

The experts say, no matter the size of the room or other furniture, you need a minimum of 2 ft extra rug on each side of the table to allow for chairs to be pulled in and out without getting caught on the rug. I have always found that to be true. Therefore you would need a minimum of 9’ by 7.5’. I would say, unless you go custom, look at 8 by 10s.