There are some common rules of thumb that you can use to determine the right size for your light fixtures.
If your fixture will be free-hanging, meaning not hanging over a table or counter and where you need clearance for people to walk beneath it, the appropriate size is calculated based on the width, length and ceiling height of the room.
To determine the appropriate diameter, add the width and length of the room in feet and convert the sum to inches. For example, if the room is 8'x10' the appropriate size is 18".
In terms of chandelier height, we recommend that the light is 3" tall for every foot of space between the floor and ceiling. You can find this number by multiplying the height of your ceiling (in feet) by three and converting that figure to inches. For example, if your ceilings are 10' high, your chandelier should be 30" tall (10 x 3 = 30).
For fixtures going over dining tables select a fixture with a diameter that is somewhere between half to three quarters the diameter (or length) of the tabletop. For example, if your dining room table is 48" wide x 60" long an appropriate size for the chandelier would be between 30" to 45" in length. If your table is round and 60" in diameter, the appropriate size chandelier would be between 30" to 45" in diameter.
If you are using multiple pendants over a counter, kitchen island or dining table you want to space your pendants approximately two feet apart. That means that if you have a smaller island that is in the 4-5 foot range you need two small or two medium pendants. If you have a larger island, you will need three medium or three large pendants.