Sizing Light Fixtures
Helpful advice for calculating proportional decorative lighting based on a room's dimensions.
 
Indirect LED lighting adds an ambient layer to help keep this decorative fixture from visually overpowering the space.
What is the rule of thumb for determining the size of a chandelier or pendant fixture for a given space? I have a 25-by-30-foot area over a stairwell and I don't want too large or too small a fixture. If you could help me out, it would make me very happy.

Just think of me as verbal Prozac. Try this formula: Add the dimensions of the width and length of the foyer area together. This number will be the measurement in inches what the width of your fixture should be. Based on the dimensions that you have given me, I think you should be looking at a chandelier that is 55 inches in diameter. The length will be a little bit harder to determine, as it depends on the ceiling height. Taller ceilings can take longer fixtures. Somebody in your family or your contractor could make a mock-up out of wooden dowels and strings to get a feel for what the fixture would look like in the space.

Randall Whitehead lighting designer
Randall Whitehead, IALD

Randall Whitehead, IALD, is a professional lighting designer and author. His books include "Residential Lighting, A Practical Guide." Whitehead has worked on projects worldwide, appeared on the Discovery Channel, HGTV and CNN, and he is regular guest on Martha Stewart Living Radio. Visit his website www.randallwhitehead.com for more information on books, upcoming seminars and the latest lighting trends.

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