There are several light bulb base sizes and shapes. We've provided this light bulb and socket guide to help you understand the industry terms and help you with bulb identification.

Here is the photo to show you how all the light bulb sizes look as well as the size in milliliters and E designations associated. These are standard light bulb thread sizes.

Nov 23, 2025 · Here is a light bulb base chart that includes pictures of conventional light bulb bases, such as fluorescent bases, LED light bases, automotive light bulb bases, halogen bases, etc., to help …

Nov 11, 2025 · Light bulb socket types define how bulbs connect to fixtures—sizes determine the physical fit, standards ensure safety and consistency, and compatibility decides which bulbs work …

Feb 1, 2022 · As you can see, knowing the bulb shape/size isn’t necessary for pairing a bulb and its socket. The exception is when the bulb needs to fit into a confined space, such as in your kitchen …

Find the light bulb base type you’re looking for with this visual chart- detailed illustrations of general bases, fluorescent bases and specialty halogen base types.

Aug 8, 2025 · In this article, we’ll walk you through everything — from light bulb base sizes to shape codes — and even share a light bulb size chart that makes everything easier to understand. You’ll …