Proportions are everything, especially when it comes to interior design. So, what size chandelier should you have in your foyer? Depending on your foyer size and structure, you can calculate the proper chandelier for the space using a measurement formula. The formula is: (ceiling height) x 2.5 = ideal chandelier height; (room width) + (room length) = ideal chandelier diameter in inches. If you have a bright foyer, play around with shape by opting for an abstract or geometric fixture. If you have a duller foyer, use a round or rectangular fixture. Lastly, make sure you have enough space between the base of the chandelier and the wall to give maximum light to all the entertaining guests of your home. Try our sample bedroom foyer to get an idea of the right size and shape. Shining Effect: If your chandelier isn’t tall enough, test it by placing two boxes or two chairs at a 45-degree angle on the top of the base and right next to each other. The light from one will shine most evenly throug...