Take that value and change feet for inches and this will be the range for the ideal height of the fixture.
Living room ceiling light height.
25 30 feet 25 30 inches this is the ideal height for a light fixture in this room.
36 40 inches between the top of your table and the bottom of your fixture 10 foot ceiling.
With a 3 foot tall table 36 inches add another 36 inches to account for the gap between the table and the chandelier base.
Swap that value to inches so 20 feet becomes 20 inches.
The american lighting association recommends the following guidelines for room and ceiling fan size.
A room with up to 75 square feet can accommodate fans in the 29 to 36 inch range.
36 inches 36 inches 72 inches.
Multiply the height by 2 5 3 per foot.
32 36 inches between the top of your table and the bottom of your fixture 9 foot ceiling.
9 feet or 108 inches 72 inches 36 inches.
40 44 inches between the top of your.
To determine the right size height of your ceiling light begin with the height of your ceiling.