Dimensions of Solid Wood Office Chairs

The dimensions of solid wood office chairs typically adhere to the following standard ranges, with specific parameters as follows:

1. Seat Width
The seat width design of solid wood office chairs must balance comfort and space utilization. Armless chairs usually have a seat width of no less than 380mm to ensure a natural sitting posture for users; chairs with armrests generally have a seat width of no less than 460mm to prevent squeezing between the arms and armrests. The seat width of conventional models is concentrated in the range of 480-540mm, which can meet the needs of most body types and aligns with the ergonomic principle of matching the width of the buttocks and thighs. Some sources indicate a seat width range of 40-50 centimeters (400-500mm), which is generally consistent with the above data, but it should be noted that extreme dimensions may affect stability or space occupation.

2. Seat Height
Seat height directly affects leg comfort and blood circulation. The standard seat height range is 40-45 centimeters (400-450mm), suitable for people of average height. If specific needs (such as for children or tall users) are to be met, the seat height can be adjusted to 390-410mm or 410-430mm. During design, it is necessary to ensure that the soles of the feet are flat on the ground and the knee bending angle is approximately 90°-100° to reduce fatigue from prolonged sitting.

3. Seat Depth
Seat depth refers to the distance from the front edge of the seat to the backrest and needs to match the length of the thighs. The common range is 400-420mm, or 380-400mm (according to some sources). If the seat depth is too short, the back of the thighs will be suspended, which can easily cause pressure; if it is too long, it may compress the blood vessels and nerves behind the knees. The ideal seat depth should allow the user's back to be in contact with the backrest while the contact area between the thighs and the seat surface is more than two-thirds.

4. Backrest Height
Backrest heights are divided into two categories: low-back (about 70 centimeters) and high-back (about 110 centimeters). Low-back chairs mainly support the waist and are suitable for scenarios where frequent standing up is required; high-back chairs can cover up to the shoulders or head, providing neck support and are suitable for long hours of office work. Some sources indicate a backrest height range of 390-420mm, which may refer to the dimensions of local support structures (such as lumbar supports) and should be distinguished from the overall backrest height.

5. Backrest Width and Tilt Angle
The backrest width is usually 400-424mm to ensure shoulder movement space; a tilt angle of 98°-102° is appropriate, which can not only keep the line of sight level but also disperse back pressure. Some designs further adapt to different sitting postures by having an adjustable tilt angle (such as 100°-120°).

6. Armrest Parameters
The recommended height of the armrests from the seat surface is 20-25 centimeters, taking the elbow height when the arms are naturally hanging down as a reference; the armrest width is 5-10 centimeters to avoid the arms being suspended due to being too narrow or space being occupied due to being too wide. Some solid wood chairs adopt a height-adjustable armrest design to adapt to different desk heights.

7. Seat Surface Shape Parameters
The front width of the seat surface (the widest part of the seat) is usually 400-420mm, and the rear width (near the backrest) is 380-400mm, forming a slightly concave 'saddle shape' that can disperse buttock pressure and prevent sliding.