Home Electrical & Lighting

Light Bulb Base Sizes & Sockets Chart

Identify common lighting bases from standard household E26 screws to chandelier E12 and spotlight GU10 pins. Compare socket millimeter measurements and LED power requirements.

Select Light Bulb Base Type:

ANSI & IEC Electrical Standard

E26 (Medium Edison)

Voltage: 120V AC (North America, Japan)

📏 Physical Dimensions:

26 mm screw diameter

💡 LED Watts Equivalent:

8W – 15W LED (replaces 60W – 100W incandescent)

🏠 Common Light Fixtures:Standard domestic table lamps, ceiling fan lights, living room pendant light fixtures.

⚠️ Electrician Safety Tip: E26 and European E27 are physically cross-compatible, but E27 is rated for 230V European mains. Never use 120V-only bulbs on 230V fixtures.

🔍 How Light Bulb Codes Are Named:The letter indicates shape (E = Edison screw, G = Glass pin base, GU = Glass with mechanical twist-lock). The number is the exact diameter or distance between pins in millimeters! (E26 = 26mm, GU10 = 10mm between pins).