What Size Aeron Chair Should I Get? (Size A or B or C?)

Are you thinking about buying an Aeron chair but don’t know which size to choose? You’re not alone. Many people are unsure about which size to buy. 

The size of an Aeron chair should be based on the measurements of the person who will be using it. The Aeron chair is available in three sizes: small (A), medium (B), and large (C).

If you are unsure about which size to choose, it is best to go with the medium size. It is the most popular size and is likely to fit most people. So, if you are between 5’2″ and 6’6″ tall, the medium size chair would be the best fit for you. Aeron size A is for shorter people whereas size C is for big and tall people.

In this article, we will help you to decide which size Aeron chair is right for you. We will also provide some tips on how to choose the right size chair.

Aeron Chair Size Dimensions

Aeron Chair Size A 

The Aeron chair size A is the smallest size available. It is designed for people who are of a height that falls between 4’10’’ – 5’9’’. The size A chair has a seat width of 26″, a seat depth of 16″, and a seat height of 14.75-19″. 

Aeron Chair Size B 

The Aeron chair size B is designed for people who are 5’2″ to 6’6″ tall. The size B chair has a seat width of 27″, a seat depth of 16.75″, and a seat height of 16-20.5″. 

Aeron Chair Size C 

The Aeron chair size C is designed for people who are 6’0″ or taller. The size C chair has a seat width of 28.25, a seat depth of 24.8″, and a seat height of 19.7″. 

Now that you know the different sizes of Aeron chairs, let’s take a look at some tips on how to choose the right size chair.

Here is the seat width, depth, and height on Aeron Size A, B, and C:

AeronSize ASize BSize C
Seat Height15 – 19’’16 – 20.5’’16 – 20.5’’
Seat Width26″27″28.25’’
Seat Depth1616.7518.5

How to Choose the Right Size Aeron Chair 

Here are a few tips on how to choose the right size Aeron chair: 

1. Measure Your Height And Width:

The first step is to measure your height and width. This will help you to determine which size chair is right for you.

If you are an average person, with average height and width, then go for size B.

Things get a bit complicated if you are a small person or a big dude.

In that case, measuring your height and weight and comparing with the recommended height, width, and weight capacity become important.

2. Consider Your Preferences:

Consider your preferences when choosing a size. Do you want a chair that is smaller or larger? Your preference might depend on a lot of factors.

Are you the only person who is going to use the chair? Or are you getting this office chair for your employees where a variety of people might use it?

If you have any confusion, go with the size B. Herman Miller made the Aeron size B as a universal chair size and which will fit more than 95% of people out there. 

3. Compare The Dimensions: 

Compare the dimensions of the different sizes to see which one is the best fit for you.

This is the most important step that most people get wrong. As I have noted earlier if your height is from 4 ft 11 inches to 5 ft 9 inches, Size A will fit you.

But if you are above 5 ft 2 inches go for Size B. As, size A will seem very small to you. Only go for size C if you are a very big and tall person.

Let’s say you are above 6 ft and an overweight individual, only then you can go for size C.

4. Try The Chairs If Possible: 

People who don’t want to make things complicated, it’s better for them to try all the sizes and choose the one that fits better.

Try the chairs before making a purchase. This will help you to determine which size is the best fit for you.

How To Know What Size Herman Miller Aeron Chair?

So, you’ve already bought a new Herman Miller Aeron chair and you want to know what size Aeron chair you have. 

Generally, you’ll have to measure the height and width of your current Aeron chair. But, the makers of the Aeron chair have done something clever to make it easy for you to determine its size. This process is quick, easy, and quite convenient. 

Here’s what you have to do to know the size of your existing Aeron chair:

  1. Look for the area on the back support of the chair where it says “Herman Miller”
  2. Place your fingers between the mesh and the plastic
  3. If you feel a single dot, then you have a size A Aeron chair.
  4. If you feel two dots, then you have a size B Aeron Chair
  5. If you feel three dots, then you have a size C Aeron chair

If you have an Aeron chair that is size A, B, or C, and you want to know the dimensions of the chair, you can find the dimensions in the table above.

Aeron Chair SizesSeat HeightSeat WidthAppropriate User HeightWeight LimitPrice
Size A:15 – 19’’26’’4’10’’ – 5’9’’300 lbs and under$1,795.00
Size B:16 – 20.5’’27’’5’2’’ – 6’6’’350 lbs and under$1,795.00
Size C:16 – 20.5’’28.25’’5’3’’ – 6’6’’350 lbs and under$1,795.00

What is the Difference Between Aeron A, B, and C? 

As the Aeron chair has three different sizes, it might get quite confusing to most people who are interested to buy this amazing office chair. The main difference between these three versions is in their size. Aeron A is the smallest, B is the medium, and C is the largest. 

Aside from size, there are also some minor differences between the three chairs. For example, Aeron A has a slightly different tilt mechanism, and Aeron C has a wider seat.

However, the most important difference is the size, so be sure to choose the right one according to your body size. 

Aeron size A chair is ideal for

  • People who are less than 5’9″ tall 
  • People who weigh 300 pounds or less 

Aeron size B chair is ideal for 

  • People who are 5’2″ to 6’6″ tall 
  • People who weigh 350  pounds or less 

Aeron size C chair is ideal for 

  • People who are more than 6’0″ tall 
  • People who weigh between 180 and 350 pounds 

How Should The Aeron Chair Fit? 

The Aeron chair should fit snugly as if it’s hugging your body. It should not be so tight that it’s uncomfortable, but it should not be too loose either.

If the chair is too loose, you might start to slide out of it, and if it’s too tight, you might start to feel uncomfortable after a while.

You can make the chair fit perfectly by adjusting the lumbar support and the tilt. The lumbar support can be adjusted up or down, and the tilt can be adjusted to make it more or less reclined. You should also adjust the height of the chair so that your feet are flat on the ground and your thighs are parallel to the ground.

So, Should You get Aeron Size A, B, or C? 

As we’ve discussed, you should determine the size of the Aeron chair that you’re buying based on height and weight.  

That should help make your decision easier, but if you’re still not sure which size to buy, please contact Herman Miller support.

Final Thoughts

Aeron chairs are some of the best office chairs available on the market. They’re incredibly comfortable, stylish, and durable. They come in three different sizes, so it’s important to choose the right one according to your body size. 

The standard material is made of breathable mesh, while the premium material has a more leather-like feel and is a bit more expensive.

Now you should have a clear idea about which size to buy. Hopefully, this article was helpful and you’re now ready to purchase your very own Aeron chair!

Sifatul Shohan

Hi, I'm the co-owner of officechairtrends.com. A blogger and a freelance web developer.  As I work as developer, I have to work for prolonged hours at a desk that's where I developed back pain. I started researching on ergonomic chairs and gained knowledge throughout the process.  This is the site where I share everything I've learned about office chairs.