Hang your chandelier so that its lowest point is 30-34 inches from the tabletop (I suggest leaning toward the higher end of this margin). The diameter for a chandelier hung over a table should be one foot less than the width of the tabletop to avoid hitting heads. If you want to place two smaller chandeliers over a long table, choose a diameter that’s about one-third of the width of the table.
What size chandelier should I buy for my ceiling height?
Use this great ratio: 2.5 inches in fixture height per 1 foot of room height. The rule is simple—the taller the ceiling, the taller the chandelier.