See Food – Miss Head

How far off the floor should you hang a chandelier or a pendant? The answer depends on where you plan to use it.
Above a dining table, your fixture should suspend 32” from the bottom of the fixture to the top of the table (this is based on an 8’ ceiling). Add 3” for each additional foot of ceiling height. With a 9’ ceiling, the pendant or chandelier should hang 35” above the table. If you choose an appropriate lighting fixture for the task, this allow for good lighting on the table, and people won’t bump their heads on it. Install a dimmer to dim your light fixture for romantic dinners or unattractive meals.
When installing a foyer fixture, the bottom of the fixture should be at least 84″ above the floor. This will ensure your fixture isn’t destroyed when the door is opened, and tall people won’t bump their heads on it. If the foyer has a two story entry, place the fixture in the space so that if windows are present, it will be centered in the window when seen from outside.