As a general rule, the base spread should be roughly 1/2 to 2/3 the size of the tabletop.

For standard dining height, the base width at the floor should be at least 0.6x the overall height of the table.

Buying a dining table base involves balancing structural stability with aesthetic appeal and guest comfort. The base is the foundation of your table, determining not just the look but also the legroom and durability. 1. Match Base Size to Tabletop