A wide variety of chairs have emerged throughout the ages, some based on formal usages, and others based on domestic needs, and some based on needs within the workplace or various professions.
Office chair
Main article: Office chair
An office chair is one used by employees within an office. Modern office chairs are usually adjustable and wheeled. Caster wheels are attached to the feet of chairs to give more mobility.
Dining room chair
A dining room chair is a specific type of design, used around a dining room table. it can be found in most ordinary residential homes, in the dining room. it also may appear in formal settings, such as any formal event or reception that includes a formal meal or banquet.
Work chair
A work chair is a specialized chair, adapted to the needs of a particular profession or setting. For example, a designing chair will be used for designers who sit at high easels; it will usually have added height.
Rocking chair
Some chairs have two curved bands of wood (also known as rockers) attached to the bottom of the legs. They are called rocking chairs.
Kneeling chair
Kneeling chair
A kneeling chair adds an additional body part, the knees, to support the weight of the body. A sit-stand chair distributes most of the weight of the occupant to the feet. Many chairs are padded or have cushions. Padding can be on the seat of the chair only, on the seat and back, or also on any arm rests or foot rest the chair may have. Padding will not shift the weight to different parts of the body (unless the chair is so soft that the shape is altered). However, padding does distribute the weight by increasing the area of contact between the chair and the body. A hard wood chair feels hard because the contact point between the occupant and the chair is small. The same body weight over a smaller area means greater pressure on that area. Spreading the area reduces the pressure at any given point. In lieu of padding, flexible materials, such as wicker, may be used instead with similar effects of distributing the weight. Since most of the body weight is supported in the back of the seat, padding there should be firmer than the front of the seat which only has the weight of the legs to support. Chairs that have padding that is the same density front and back will feel soft in the back area and hard to the underside of the knees