Ovals and rounds dont seat as many people as rectangular, and with a room that size you want max seating most like, so I'd stay rectangular. You don't mention if there are any sideboards or buffet in the room, however the general formula used is 24" away from the table itself fo the chair turnout (or pullout) from the table and then another 24" to the wall or a sideboard, etc.

So, using our formulas above we have 138" to the wall, - 48" means an absolute maximum of 90" on the table length. I'd be more inclined to drop down to an 84" and then keep the width around 38" or so, again depending on what else is in the room.

Good luck - Duane Collie

A 60” round seats 6 and if it can expand to a oval with a leaf..you can seat 8... in a room that is basically 11x11 square where table would be a round will look beautiful and have 6 chairs all the time..

How many people do you want to enjoy around the table, though? You can squish many more around a round or oval table than you can around a rectangular one. I agree with Home Interiors with Ease - a 60" round table with leaves would be great - sits 4-6 comfortably, and can accommodate up to 12 really good friends (we've done that around ours, and it's fun!).

Actually, the physics of shapes will show you give up area on a round of oval vs a square or rectangular. This simple diagram shows it, the shaded areas are what is lost in the round shapes.. Whether you are using that additional area for serving dishes or to put (2) chairs at the ends instead of one, it's pretty clear when you look at this that you will get more usable surface area from square and rectangular tops. For smaller rooms, that can make a difference.

Duane Collie

A round pedestal table allows more chairs to squeeze in without battling table legs.....and that little bit of extra open space you gain in the room helps with the flow.

IMO a pedestal round table that has a leaf to make it an oval will seat more people than a rectangle with legs.