How to size a Herman Miller Aeron Chair

Office Solution Pro is supported by its readers. This post contains affiliate links, we may earn a commission at no additional costs to you. We hope you love the products we recommend!

Are you considering the Herman Miller Aeron chair to complete your office interior design? Smart choice. But wait, you do know that the Aeron chair comes in three sizes, right? In this post, we’re going to break down the entire Herman Miller Aeron chair to provide you with the best sizing guide.

What size Herman Miller Aeron chair do I need? The Herman Miller Aeron chair has three sizes: size A, size B, and size C. These sizes translate to small, medium, and large respectively. Generally, size B is suitable for most people. It is recommended for people between 5’2” to 6’6” tall weighing around 130 to 325 pounds.

Herman Miller Aeron Chair Size Chart

Let’s address the overall build of the Herman Miller Aeron chair. This wonderful masterpiece comes in three sizes that cater to a wide range of users. The three sizes are size A, size B, and size C. More simply, they are categorized as small, medium, and large respectively. Refer to the picture below to understand the overall dimensions of the chair:

Taken from

Herman Miller did an amazing job of making it easy for the users to find the best size. The Herman Miller Aeron size chart below is to help you find the perfect size based on your height and weight. The vertical axis represents your height, while the horizontal axis represents your weight. To get a better idea, see the chart below: 

How to Tell Size of Herman Miller Aeron Chair

You might think to yourself: how can I tell what size my Herman Miller Aeron is? It’s very simple. The genius folks at Herman Miller created a subtle way to tell the Aeron chair size. All you need to do is to put your fingers on the backside of the backrest. You will find ‘special markings’ or dots. The dots determine the size of the chair.

If you feel one dot, this means that the Aeron chair is size A. If you feel two dots, this means that the Aeron chair is size B. If you feel three dots, this means that the Aeron chair is size C. These dots help you determine the size of the chair with a simple touch. Check out this quick video on where to find the dots:

What Size Herman Miller Chair Do I Need?

Now that you’ve properly understood the entire Herman Miller Aeron chair size chart, let’s take the time to recap everything we’ve learned. To help answer the question of what size Herman Miller chair do I need easier for you, here’s the general recommendation based on your height and weight: 

  • Buy a size A if: you are between 4’10” and 5’9” weighing between 90 to 150 lbs.
  • Buy a size B if: you are between 5’2” and 6’6” weighing between 130 to 325 lbs.
  • Buy a size C if: you are between 5’3” and 6’6” weighing between 180 to 350 lbs.

While there are some overlaps between measurements, you can refer to the general recommendation above to choose the best size for you. Don’t worry, Herman Miller comes with an industry-leading 12-year warranty and a 30-day to return the chair for a full refund. Now that’s top-notch customer service!

PRO TIP: While the Herman Miller Aeron chair is surely one of the best office chairs available, many still question whether the Embody chair is better. To find out which one came out on top, check out our complete comparison of Aeron vs. Embody to help you decide which Herman Miller chair is the best.

Bottom Line

And there you have it, the complete Herman Miller Aeron Chair size chart. We hope our simple post can help you choose the best size to complete your office setup. After all, the Aeron chair is one of the best office chairs you can buy, and arguably the top pick for the best Herman Miller office chairs ever. Have a good day! 🙂

You may also want to read: