Rugs should compliment your table or desk shape and size.
Rug under coffee table size.
You can go with a smaller rug like a 5 by 8 that can float in the room in between the furniture but under the coffee table says loloi a rug.
For smaller living rooms you have two options.
To get the proportions right base the rug size on the interior dimensions of your seating area and not just the coffee table so it fills the negative space created by your furniture grouping.
I recommend buying a rug that fits the size the table is kept at normally if you only use the leaves extensions twice a year try to take that into consideration.
Leggy furniture should have four on the floor or rug all dining chairs should be able to scoot in and out while staying on the rug.
6 chair dining room tables need an 8x10 rug.
To over simplify usually these sizes will suffice.
For instance a 40 by 60 inch table should be paired with at least an 8 by 10 foot rug but would work best with a 9 by 12 foot rug.
This is the minimum size you would want.
Living room rugs should fit under the couch and chairs.
Area rugs that are 4 x 6 feet or 6 x 9 feet are generally suitable for using under coffee tables.
Bedroom rugs should leave a walkway on the sides of the bed.
Only a coffee table on the rug perfect for small or narrow spaces this layout plays off the room s scale to make it feel larger.