Width of Office Chair Feet

The width of office chair feet varies depending on the specific product design and type, commonly ranging from 300mm to 700mm, with some special designs possibly exceeding this range.

1. Common Diameter Range of Chair Feet

According to market product data, the diameter of office chair feet (i.e., the spread diameter of the five-star base or chassis) typically ranges from 300mm to 700mm. For example, some ergonomic chairs are designed with a chair foot diameter of 700mm, which enhances stability through a wider support surface, making them particularly suitable for users with a heavier weight or those who need to move frequently. On the other hand, some lightweight office chairs may have a smaller chair foot diameter, approximately 300mm to 500mm, to save space and reduce costs.

2. Difference in Diameter of Chair Foot Support Rods

It should be noted that the “chair foot diameter” mentioned in some sources may refer to the diameter of the support rod (i.e., the thickness of the metal rod connecting the chair wheels to the five-star base), rather than the overall spread width of the chair feet. The diameter of such support rods typically ranges from 25mm to 30mm, and their function is to bear the user's weight and transfer it to the chair wheels, which is related to the stability of the chair feet but not the same concept.

3. Factors Affecting Chair Foot Width

• Chair Wheel Type: Chair feet with a large diameter are usually paired with wider chair wheels to distribute pressure and reduce damage to the floor (such as carpets or wooden floors).
• Usage Scenario: Open office areas may prioritize narrow chair feet to save space, while independent offices or meeting scenarios may prefer wide chair feet to enhance comfort.
• Material and Structure: Metal chair feet (such as aluminum alloy) can be designed thinner while maintaining stability due to their high strength; plastic chair feet need to be wider to compensate for their insufficient material strength.

4. Selection Suggestions

For high stability requirements (such as for heavy users or frequent movement scenarios), it is recommended to choose products with a chair foot diameter of ≥600mm; if space is limited or lightness is pursued, chair feet with a diameter of 400mm to 500mm can be selected. Before purchasing, check the product specification sheet or consult the merchant to confirm whether the “chair foot diameter” refers to the overall spread width to avoid misunderstandings.

Reference source: Product manual of a certain brand of ergonomic chair (chair foot diameter 700mm).
Reference source: Office furniture industry standard document (support rod diameter 25-30mm).
Reference source: Furniture design forum discussion (relationship between chair foot width and stability).