For square or rectangular tables, the rule of thumb is that you need 2 ft of space for each person, so a 10ft long table can seat 5 people on each side (10 ft divided by 2 ft = 5), plus two people on the ends for a total of 12 people. A 60″ long table (5 ft.) can seat 6 people, 2 on each side, plus 2 on the ends. If you have a 60″ bench on the side of a 60″ table instead, this might allow you seat 3 people on a side (slightly tight) because 3 people take up less space than 3 chairs.