How many people can sit at a 40 inch round table?
To figure this out, you'll need to know that the circumference
of a 40" table is approximately 126". Many designers allow about
30" of space per person at the table's edge, especially in
commercial applications. Therefore, 4 people can fit at a 40" round
table. (For residential settings, you can sometimes plan for 24"
per person and might be able to squeeze in an extra chair.)