E26 vs A19 Light Bulb: Differences and All Related Information

Nowadays, there would be no living without light, which is necessary and the reality of human life. Electric bulbs blessed people by giving them complete control over illumination inside their homes and offices at the flick of a button. People have gotten more selective in their search for high-quality light bulbs as time has passed, and it is critical to grasp popular home light bulb shapes, sizes, and styles.

There are many different light bulbs, but at night, everyone requires natural light provided by electricity. We want to examine two light bulbs that are typically considered interchangeable. We’ll compare and contrast E26 vs A19 light bulbs to see the differences.

What Is a Standard Size Light Bulb?

What Is a Standard Size Light Bulb
What Is a Standard Size Light Bulb

The E26 light bulb is a standard size in the United States. The E26 bulb has an MES (Medium or Standard) base.

An Edison Screw is a base used by light bulbs that may be screwed into a light fixture. It’s named after Thomas Edison, the inventor.

There are also larger bulbs, such as the E39, and smaller bulbs, such as the E12 and E17.

The standard base type range, according to Energy.gov, includes E26, E26d, E17, E11, E12, GU24, GU5, and GX5.3.

What method is used to standardize these bulbs? They are managed by the American National Standards Institute (ANSI), which is developing voluntary consensus standards for products in the United States.

***Read more: A19 Light Bulb: Useful Lighting Knowledge 2022 [All-to-know]

E26 light bulb

E26 light bulb
E26 light bulb

# What is E26?

The “E” in E26 refers to Thomas Edison’s invention, the Edison Screw. This happens to be the most extensively used standard.

The “26” in E26 refers to the diameter of the bulb or lamp. This measurement is in millimeters and equals around 1 inch.

E26 refers to the lamp base and does not provide any information about the bulb’s shape. The mounting mechanism for an E26 screw-in bulb is a 26-millimeter diameter screw, but the light itself can be several shapes and sizes.

#Where is an e26 light bulb used?

In North America, Japan, and other nations that use 120V AC, E26 bulbs are among the most regularly used lamp bases. Although the E26 bulb base was initially designed for incandescent lamps, fluorescent CFL lamps and LED bulbs have continued to use it.

E26 bulbs are among the most regularly used lamp bases
E26 bulbs are among the most regularly used lamp bases

# How does an e26 LED bulb work?

When the bulb’s screw is aligned with the fixture socket, the E26 bulbs work like any bulb with an Edison Screw base. Electrical wires are soldered or welded to the screw threads and bottom contact point on the bulb’s interior. These wires connect to the filament in incandescent bulbs, but CFL and LED E26 bulbs; relate to the internal circuitry.

# What are the advantages of E26?

Finding an appropriate lamp holder or fixture for an E26 bulb is relatively simple as one of the most prevalent lamp types. Their installation is typically straightforward, requiring no tools or assembly.

Furthermore, Edison screw bases are among the safest ways to mount a bulb. The screw threads’ strength and rigidity make the e26 led bulb ideal for areas where vibrations are expected. In contrast, a tight fit in the screw base prevents moisture and debris from entering the contact points, lowering the risk of electrical failure.

***Read more: Top 6 Best LED Filament Bulbs: Perfect Choice for Classic Style

What is the A19 light bulb?

What is the A19 light bulb
What is the A19 light bulb

A19 is a phrase that characterizes the overall shape of a light bulb, with “A” referring to a pear-shaped bulb and the number 19 following the “A,” indicating the bulb’s width in a length of 100-110 mm and a width of around 60 mm. As a result, the most frequent bulb shape is A19.

All A19 lamps have an E26 base, but not the other way around!

The E26 screw base is required by the regulations that control the dimensions and design of A19 light bulbs. To put it another way, all A19 light bulbs have an E26 base.

However, as previously stated, not all light bulbs with an E26 base are of the A19 form factor.

When shopping for bulbs, be cautious of this difference to make sure you pick the suitable one for your light fixture.

***Read more: A21 Light Bulb: Dimension & Compatibility with Lamp Holders

E26 vs A19: What is the difference?

E26 vs A19 What is the difference
E26 vs A19 What is the difference

#1. Base Type

A base known as an Edison Screw or ES base is used in screw-in bulbs. Thomas Edison created this base for the first light bulbs, and it is still in use today.

For lights, four-thread size groups are typically used:

E12 in North America, E11 in Europe. Candelabra: E12 in North America, E11 in Europe.

Intermediate: E17 in North America, E14 in Europe (Small ES, SES).

In North America, E26 (MES) is used, but in Europe, E27 (ES) is used.

E39 (Goliath ES) in North America, E40 (Mogul ES) in Europe.

The number after the E denotes the external thread screw’s size in millimeters. Thus an E26 has a 26 mm base diameter.

You may find low-cost LED bulbs with an E27 base from overseas sources on eBay and Amazon. While these will technically operate in E26 grounds, this is usually a clue that the bulb was not specifically built for the US market. The bulb may not have a genuine North American, UL, or ETL safety certification and should thus be avoided.

#2. Bulb Shape

A19 light bulb shape
A19 light bulb shape

What does A19 or bulbs with an A designation signify now that we know E26 and E27 are names used to designate the type of base used?

A pear-shaped bulb is referred to as a type. The number after the “A” denotes the bulb’s width in eighth-inch units or millimeters within the A-series.

The A19 light bulb, which is 2 38 inches (60 mm) diameter at its widest point and 4 38 inches (110 mm) long, is the most commonly used A-series light bulb. When looking for a “Light Bulb,” most people are used to seeing this shape.

***Watch video for more details: E26 vs A19 Size: What is Difference?


Householders who wish to fix the light bulbs of their home, office, and other necessary premises have the freedom to choose a light bulb. However, as a customer, you may not realize the significance of distinguishing between A19 and A21 bulbs. As a result, it’s critical to focus on the topic of this article, where we’ve elaborated and tried our hardest to cover as much information as possible on E26 vs A19 light bulbs. We also analyzed the benefits and drawbacks of both products, which may help you choose the best one.