Understanding Light Bulb Bases: A Quick Guide: Learn about common light bulb bases and their usesSarah ThompsonMay 24, 2025Table of ContentsTips on Selecting the Right Light Bulb Base:FAQTable of ContentsTips on Selecting the Right Light Bulb BaseFAQFree Smart Home PlannerAI-Powered smart home design software 2025Home Design for FreeWhen purchasing new light bulbs, understanding the different types of bases is essential for ensuring compatibility with your fixtures. The most common base for standard light bulbs is the E26 base (or Edison screw), primarily used in the United States. This base has a diameter of 26 mm and is designed for ordinary household lamps.Another common base is the E27, which is similar to the E26 but is used primarily in Europe and has a slightly larger socket (27 mm). Additionally, there are specialty bases like B22, which features a bayonet cap designed for twist-and-lock functionality, often found in older lighting fixtures.Do you know the base type for your existing light fixtures? Identifying it before you shop helps you avoid the hassle of returns and ensures you get the right bulb!Tips on Selecting the Right Light Bulb Base:1. Check your fixture: Make sure to look for any markings or instructions indicating the type of bulb base required.2. Consider compatibility: If you’re switching to LED bulbs, verify that the base type matches the socket in your lamp or fixture.3. Don't forget about wattage: While focusing on the base, ensure the bulb’s wattage is suitable for your lighting needs.FAQQ: What is the most common light bulb base in households?A: The E26 base is the most common for household light bulbs in the United States.Q: Can I use an E27 bulb in an E26 socket?A: Yes, E27 bulbs can fit into E26 sockets as they have a similar design, but it is always advisable to check compatibility first.Home Design for FreePlease check with customer service before testing new feature.