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Light Bulb Shape Guide: Chandelier

Light Bulb Shape Guide: Chandelier

When it comes to decorative lighting, the chandelier light bulb offers the perfect balance between aesthetics and practicality. Its pointed tip design replicates the beauty of a candle flame without the potential harm of an open fire. Originally introduced as an incandescent bulb, you can find LED versions for an energy efficient solution. In order to identify the many variations, for our fourth installment of the Light Bulb Shape Guide, we will be covering the chandelier light bulb.

Chandelier Light Bulb Shapes

Similar to the shape of a candle, the chandelier light bulb is the modern-day solution for decorative lighting fixtures. Comparable to the other light bulbs previously mentioned in our Light Bulb Shape Guide, the chandelier bulb shape is identified in the form of a code. With a few different types of chandelier bulbs available, the most common begin with the following letters as prefixes.

  • B – Bullet or “Torpedo” 
  • C – Candle or “Conical”
  • CA – Candle Angular
  • F – Flame Style 

The following numeric value is the diameter measured in eighths of an inch. For example, a C11 shaped chandelier bulb is 8/11 or (1.375) inches wide. The most common shapes can be found in the table below.

Example of Chandelier Bulb Shapes
Shape Diameter in Inches Approx. Length (Inches)
B10 1-2/8 3.75-3.9
B11 1-3/8 3.88
C7 7/8 2
C9 1-1/8 2.75-3
C11 1-3/8 3.85-4
C15 1-7/8 4.5
CA10 1-2/8 4-4.25
F10 1-2/8 3.06


The diameter of the bulb is easily identifiable as the shape of the bulb while the length may vary depending on the manufacturer. When purchasing chandelier bulbs or replacing a burnt out bulb, it’s recommended to buy them all at the same time from the same manufacturer so the color temperature and brightness is consistent for the whole fixture.

Chandelier Light Bulb Base Types

In order to determine the size base of a chandelier bulb, there are two variables of a designated code to consider.  The letter “E” refers to the “Edison” style base and the numerical value after represents the diameter in millimeters. For example, a bulb with an E12 base is an Edison screw in base with a 12 millimeter diameter. The following are a list of the most common types of chandelier light bulb bases.

Example of Chandelier Base Types
Code Base Type
E12 Candelabra
E26 Medium

Most US households are accustomed to the E12 or E26 base since fixtures such as lamps, sconces, and decorative lights use these two bases.  Most chandelier light bulbs feature these types of bases to simplify the fit. 

Where are Chandelier Light Bulbs Used?

Just as the name suggests, this particular bulb is mainly used for chandeliers, but you can also find them in lamps, pendants, wall sconces, and some Christmas lights. Due to their well-known shape, a majority of Christmas lights are made up of either C7 or C9 bulbs. For a vintage glow, you can find incandescent replacements or if you’re looking for a brighter radiance, they are currently being offered as LED replacements. Even though Christmas is still quite a ways away, with so many colors to choose from, make this upcoming holiday a decorative one and have one less thing to worry about in December.

Have you recently installed chandelier bulbs or Christmas lights for your home? Want to know how to install a twinkle light ceiling? Show us your pictures by sharing your photos to our social media pages via Facebook, Twitter, Google+, LinkedIn, or Pinterest. Even though it’s a hit song, for the safety of your light bulbs, we here at 1000Bulbs.com urge you not to “swing from the chandelier.”


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