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Bulb & Socket Guide

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PartyLights.com hopes to take the guessing game out of string light and bulb shopping. There are only three bulb sizes that we sell: C7, C9 and Medium. These are the names we use, but these bulb sizes can go by many different names. The images below provide a great visual for bulb size comparison.

A Bulb By Any Other Name...

  • C7 Bulbs have a candelabra or E12 base. This size bulb is typically used for chandelier-type fixtures and decorative lighting.
  • C9 Bulbs have an intermediate or E17 base. These are historically known as the old Christmas light bulb size.
  • Medium Bulbs have a E26 base (E27 in Europe). This is the same size as a standard household bulb.

Naming Convention

Besides the C7 or intermediate size references, the base size has the letter-number format. The first letter designates the shape or form of the base. The number represents the width of the base (normally in millimeters). For example, our 11S14 bulb has an E26 base. The "E" refers to the style which is an Edison screw-in, and the 26 means it has a 26 mm base width.

Socket Comparison

Bulb Comparisons

The image below compares our three C7 (E12) base bulb sizes: G30, G40 and G50.



The image below compares our G40 and G50 bulbs in C7 and C9 base sizes.



The image below compares our G50 bulbs in all three base sizes.

Bulb Shopping

The table below lists all of the bulbs sizes available through PartyLights.com. The chart allows you to compare the size and wattage on one page. The sizes listed are the size of the globe of the bulb and does not include the extra height of the socket.


C7 Base Bulbs
G30 Bulb G30 Bulbs
5 watts
1.25" diameter
Clear & Colors
G40 Bulb G40 Bulbs
5 watts
1.5" diameter
Clear & Colors
G50 Bulb G50 Bulbs
7 watts
2" diameter
Clear & Colors
LED G40 Bulb LED G40 Bulb
0.37 watts
1.5" diameter
White
LED G40 Premium Bulb LED G40 Premium Bulb
0.6 watts
1.5" diameter
White
LED G50 Premium Bulb LED G50 Premium Bulb
0.6 watts
2" diameter
White
   
C9 Base Bulbs
G40 Bulb G40 Bulbs
7 watts
1.5" diameter
Clear
G50 Bulb G50 Bulbs
7 watts
2" diameter
Clear & Colors
10S11 Bulb 10S11 Bulbs
10 watts
1.5" diameter
Clear & Colors
C9 Bulb C9 Bulbs
7 watts
1" x 2"
Clear & Colors
C9 Vintage Edison Bulbs Vintage Edison Bulbs
7 watts
1" x 2"
Clear & Colors
LED C9 Bulb LED C9 Bulbs
0.49 watts, 5 LEDs*
1" x 2"
Whites & Colors
Faceted & Smooth
LED G30 Bulb LED G30 Bulbs
0.49 watts, 5 LEDs*
1.125" diameter
Whites & Colors
LED G40 Bulb LED G40 Bulbs
0.49 watts, 5 LEDs*
1.5" diameter
Whites & Colors
Smooth & Faceted
LED G40 Premium Bulb LED G40
Premium Bulbs

0.6 watts, 5 LEDs*
1.5" diameter
White
LED G40 Professional Bulb LED G40
Professional Bulbs

1 watt, SMD LED
1.5" diameter
White
LED G50 Premium Bulb LED G50
Premium Bulbs

0.6 watts, 6 LEDs*
2" diameter
White
   
Medium Base Bulbs
7.5 S11 Bulb 7.5 S11 Bulbs
7.5 watts
1.5" x 1.25"
Clear & Colors
G50 Bulb G50 Bulbs
15 watts
2" diameter
Clear
11S14 Bulb 11S14 Bulbs
11 watts
1.75" x 2.75"
Clear & Colors
A15 Bulb A15 Bulbs
15 watts
2" diameter
Clear & Colors
A19 Bulb A19 Bulbs
25 watts
2.25" x 3"
Clear & Colors
Vintage Edison Bulbs Vintage Edison Bulbs
25 watts
Varied sizes/shapes
Clear
LED G50 Bulb LED G50 Bulbs
0.96 watts, 10 LEDs*
2" diameter
Whites & Colors
LED G50 Premium Bulb LED G50
Premium Bulbs

0.7 watts, 16 LEDs*
2" diameter
Whites & Colors
LED G50 Professional Bulb LED G50
Professional Bulbs

1.4 watts, SMD LED
2" diameter
Whites
LED A15 Professional Bulb LED A15
Professional Bulbs

1.4 watts, SMD LED
2" x 2.75"
Whites
LED S14 Bulb LED S14 Bulbs
0.96 watts, 10 LEDs*
1.75" x 2.75"
Whites & Colors
LED S14 Premium Bulb LED S14
Premium Bulbs

1 watt, 16 LEDs*
1.75" x 2.75"
Whites & Colors
LED S14 Professional Bulb LED S14
Professional Bulbs

1.4 watts, SMD LED
1.75" x 2.75"
Whites
LED Vintage Edison Bulb LED Vintage Edison Bulbs
2 watts
Varied sizes/shapes
White


*The bulb wattage is the power that it draws. For LED bulbs, we estimate that the light it emits is about 1 watt per LED. For example, the LED C9 bulb has 5 LEDs, so we estimate it emits about 5 watts.