E26an E26. The ‘E’ indicates an Edison screw base and 26 is the diameter in millimeters.

What is the standard light bulb base size in the US?


Medium or Standard: E26 (26 mm in diameter) is the size of the majority of light bulbs used in the United States. Mogul: E39 (39 mm in diameter) is utilized for street lights and high-wattage lamps.

Is E26 and A19 the same?

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

The standards that govern the dimensions and design of A19 light bulbs also dictate that it must use an E26 screw base. In other words, all A19 light bulbs also have an E26 base.

What is a standard light bulb screw base called?

Edison Screw

Screw in bulbs use a base called an Edison Screw or ES base. This base was developed by Thomas Edison for the first light bulbs and is still in use today. There are four commonly used thread size groups for lamps: Candelabra: E12 North America, E11 in Europe.

Is E26 a standard bulb?

The most common type of light bulb here in the United States has what is referred to as a “Medium” base or “Standard” base. The word “base” is referring to the threaded part of the light bulb that screws into the socket. A Medium or Standard base light bulb is also referred to as an E26 base light bulb.

Are E26 and A15 the same?

Ceiling fan light bulbs

Most ceiling fans use a light bulb that looks like a small version of the “standard” size. this is an A15 size and either uses a medium (E26) or candelabra (E12) size socket.

Are E26 and G25 the same?

The G25 shape is usually pared with a E26 (medium) base, similar to that of a standard A19 and come in outputs ranging from 25 watts to 60 watts. G25 LED Bulb Replacements G25 shaped LED bulbs now exist and are a great replacement for decorative and vanity applications.

Is an A19 bulb standard?

Intro to LED A19 Bulbs. Shaped like a snow cone, LED A19 bulbs are probably what you think of when someone says “light bulb.” This shape bulb has become the standard for household lighting in living rooms, bedrooms, and more.

Is A19 a standard bulb size?

Physical outline. The most commonly used A-series light bulb type is an A60 bulb (or its USC equivalent, the A19 bulb), which is 60 mm (19/8 in or 2 3/8 in) wide at its widest point and approximately 110 mm (4 3/8 in) in length.

What is E26 bulb size?


E26 refers to the thread base size of 26mm. It’s the most commonly used American light bulb thread. E26 bulbs can be used with various bulb shapes like standard A19, vintage, globe, tubular, candle, and smart bulbs.

Are E12 and E26 the same?

E26 is the size of most light bulbs used in the U.S. It’s referred to as having a “medium” or “standard” base. E12 is the smaller “candelabra” base. It’s used for nightlight bulbs, and sometimes for decorative light bulbs used in chandeliers and over bathroom mirrors.

What does an E26 bulb base look like?

You can most instantly recognize an E26 bulb by looking at the bottom, or non-light emitting side of the bulb. If you see a metallic base with screw threads, approximately 1 inch in diameter, you most likely have an E26 bulb.

Is E26 and E27 the same?

These two standards are interchangeable, meaning a US E26 will fit in a European E27 base, and E27 will fit in a E26 base. The only difference is the voltage (for light bulbs). In fact there is only 1 mm difference between the threads of E26 and E27, so they are virtually identical.

What is the difference between E26 E27 and A19?

E27 (or E26 here in the USA) is the size of the socket screw base, also called a medium base. A19 is the sandard indoor light bulb shape. They also have a BR30 shape bulb that fits into the standard ceiling can fixtures and it has the E26 medium base as well.

How do I know what base my light bulb is?

To know the base of a light bulb, identify if it is a screw type that has threads around the base, or a pin type that has 2 points of contact on the base. After that, measure the diameter of the screw base, or the distance between the two pins, in millimeters.

What’s the difference between A19 and A21 bulbs?

A21 and A19 simply refer to size and shape of the buld. A standard, household bulb is an A19 which is 2.375 inches in diameter, while A21 is 2.625 inches so it will depend on the space available in your light. Hope that helps!

Can I use A21 bulb instead of A19?

Yes, because A19 lamps are smaller in all dimensions than A21 lamps, they will fit in virtually all fixtures and lampholders designed for A21 lamps.

Are all A19 bulbs the same size?

Dimensions of an A19 bulb

The length of an A19 bulb is typically 3.9 – 4.3 inches (100-110 mm) in length. For the most part, an A19 bulb can be considered to be within its dimensional requirements if it is within 112.7 mm in length, and 69.5 mm in diameter.

Are E12 and A19 bulbs the same?

E12 is a designation used for a type of lamp base used on a light bulb. You are likely familiar with E26 lamp bases – the standard screw-in lamp base, approximately 1-inch in diameter, commonly used in standard A19 lamps. E12 uses the same naming system as E26, whereby the letter “E” signifies an Edison screw base.