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Choosing the correct size is essential when buying a Herman Miller Aeron.
Unlike most office chairs, the Aeron is available in three different sizes: A, B, and C. Each size is engineered to fit specific body types for optimal ergonomic support.
This guide explains how to choose the right size based on height, weight, and sitting posture.
Herman Miller Aeron Sizes
Below is a general recommendation based on body measurements:
Size A
Recommended for:
- Height: approx. 148–165cm
- Weight: approx. 40–68 kg
Best for smaller body frames or petite users.
Size B
Recommended for:
- Height: approx. 160–190cm
- Weight: approx. 59–100kg
Size B is the most popular and fits the majority of users.
Size C
Recommended for:
- Height: approx. 185–200+cm
- Weight: approx. 82–159 kg
Designed for taller and broader body types.
Aeron Size Chart
How to use the size chart:
- Locate your height on the left vertical axis (CM).
- Locate your weight on the bottom horizontal axis (KG).
- Follow both measurements until they intersect.
- The shaded area where they meet indicates your recommended size:
A (Small)
B (Medium)
C (Large)
Overlapping zones (A/B or B/C) mean either size may work depending on preference.
When in doubt, contact our team for personal sizing advice.
FAQ – Herman Miller Aeron Size & Fit Guide
Below you will find the most frequently asked questions about Aeron sizing, posture support, and choosing the correct chair for your body type.
What if I am between two sizes?
If you fall into an overlap zone:
- Choose the smaller size for a snug, supportive fit
- Choose the larger size for more space and seat depth
Personal preference and thigh length can influence your decision.
Does Aeron sizing differ between Classic and Remastered versions?
No. Both Classic and Remastered versions of the Herman Miller Aeron use the same A, B, and C sizing system. The ergonomic adjustments differ slightly, but overall dimensions remain consistent.
How can I check the size of my existing Aeron chair?
Look underneath the upper backrest frame. You will find raised dots:
- 1 dot = Size A
- 2 dots = Size B
- 3 dots = Size C
Should I choose based on height or weight?
You should consider both. The official size chart combines height and weight to determine the most suitable option.
Can I exchange the chair if the size does not fit?
Yes. As a consumer, you have the right to return your chair within 14 days of receiving it.
If you are unsure about sizing before ordering, we recommend contacting us for personal advice to avoid unnecessary returns.