Finding the right chair height
Traditional ergonomics will tell you that the optimum height for an office chair will put your knees into a 90-degree angle. If your feet are resting on the floor, that means that the seat height must be able to reach the back of your knees.
This rigid way of thinking, while still relevant, is now only half of the picture. By changing your seating position regularly throughout the day, you keep your body active, reducing the effects of sedentary behaviour. You should be able to place your feet comfortably with your knee joint angle no less than 90 degrees, but that doesn't mean you should stay like that all day. It's all about movement and variety of seating position.
So what size chair should you get? The answer is all based on the work surface you plan on working from. If you are planning on working from various heights, a gas stem which offers you the range of heights is what you should choose.
Office chairs equipped with a gas stem often have quite a wide height variable, and the standard height options will be able to accommodate most people’s requirements. However, if you are uncertain, its always best to measure beforehand.
The right desk height
When seated correctly, you should be able to fit your legs underneath and sit as close to your desk as you feel is comfortable. If your hands are higher than your elbows your desk is too high, or your chair is too low.
You can lower your work surface by using a keyboard tray attached underneath the desk. Alternatively, you can raise your seat height and use a footrest or footring to bring your feet up higher to a comfortable resting position.
If your desk is too low, meaning you cannot get underneath comfortably, place risers underneath the table to bring it up to the correct height.
Read more - choosing the right materials for your office chair
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