Pendant size comes down to proportion. If it is too small, it looks like an afterthought. Too large, and it starts to feel heavy over the table.
When hanging a pendant over a dining table or kitchen island, a common rule is to choose something that measures about one half to two thirds the width of the surface below. That keeps the light visually tied to the table without extending too far past the edges. For example, a 36 inch wide table usually pairs well with a pendant in the 18 to 24 inch range.
If you are installing multiple pendants over a long island, think about the full layout. Smaller pendants spaced evenly can feel balanced and clean. Larger ones need more breathing room so they do not crowd each other.
Ceiling height also plays a role. In rooms with standard eight foot ceilings, pendants typically hang about 30 to 36 inches above the table or countertop. Higher ceilings can handle a slightly larger fixture and a longer drop, but the light should still feel connected to what is below it.
Visual weight matters as much as measurement. An open frame pendant can feel lighter than a solid shade of the same size. Always step back and look at the whole room before committing.
When the proportions feel right, the pendant blends into the space naturally instead of fighting for attention.