Updated at: 27-09-2022 - By: Helen Skeates

You are such a nice person. We are all aware of your insatiable need for chair time. Having them occasionally be too high or too low for your frame probably doesn’t bother you.

Yet, we’re here to lend a hand. This article will cover the three simple procedures required to change the height of a swivel chair by using a Bob at the base.

Steps on Adjusting Swivel Chair Height With a Bob at the Bottom

To change the height of a swivel chair that has a bob at the base, the first thing you need to do is sit in the chair. Hold on to either side and pull yourself up so that your feet are six inches or higher off the ground.

Step 2: Place one hand on each armrest and lean back until your bottom is about three inches from the seat.

Third, let your arms hang loosely from the chair’s armrests and return to a seated position. You should now be seated at a level that allows you to type comfortably while maintaining a straight line of sight to the screen of your computer or laptop.

How to Adjust Swivel Chair Height With a Bob at the Bottom - Krostrade

What is the Best way to Adjust a Chair for Posture?

Raising or lowering the height of one’s chair is a simple yet effective method for improving posture. Increase the height of your seat to appear more alert and alert yourself.

If you spend a lot of time hunched over a computer or phone, this may also relieve some of the associated pain. If there isn’t a chair big enough for Bob, then what? Here are three variants that are functionally equivalent:

To make it accessible to a person of average height (5’0″), prop up one leg with a stack of books (or use two stacked if necessary). Pillow fort-building involves sitting on a growing pile of cushions. Place the legs next to each other on the floor or in the space between two chairs to remove them.

Five ways to raise an Office Chair without Lever


If you want to raise or lower a chair without using a lever, this is the simplest technique.

As was previously indicated, the vast majority of chairs with a mechanism to change their height use either a lever or a clockwise and anticlockwise turning handle.

Changing the height of one of these seats is a breeze:

  • Raise yourself up out of that chair.
  • Slowly begin rotating your chair counterclockwise. Pay close attention to see if the chair is getting higher or lower. If it rises as you turn it, continue doing so until you reach the required height.
  • If the chair’s height continues to decrease as you turn it clockwise, you should spin it counterclockwise until you reach the appropriate height.

Keep adjusting the chair’s height in both directions until you get the perfect fit. If the chair you want to purchase does not contain this mechanism, continue reading for alternative suggestions.


In order to modify the height of the seat, a threaded post is installed in many chairs. So, turn the chair upside down to grease the threaded post and raise the seat height.

Nonetheless, the chair should be spotless before the oil is applied. In addition, cover yourself and your clothing with a clean cloth to avoid oil stains.

Make sure the base doesn’t move in either direction when you’re fastening it by standing on it. The chair’s height can be adjusted by rotating it counterclockwise to raise it and clockwise to lower it.

If you notice a variation in height, you can test the chair out to check if it’s the right height.

Take it easy, though. You shouldn’t hurry and ruin the procedure.

But if you’re still not satisfied with the height, give it a little more rotation. Each revolution adds about a quarter of an inch to the total height. Therefore, if you want to add another 2.5 inches to the height, you should give it at least 10 anticlockwise spins.

Keep in mind that you can only accomplish this if the post in your chair is threaded. If not, then proceed to Plan B.


Chair height is easily modified by adding or subtracting a wooden wedge. To do this, insert a plank of wood under the seat.

First, you’ll need to drill a hole through the wooden piece. The best grip can be achieved with a piece that is 2 inches by 2 inches.

How to Adjust the Height of an Office Chair | Overstock.com

A lengthy bolt or nut will have to be inserted into the opening. The amount of wooden slats of a chair is proportional to the fasteners holding it together.

The next step is to insert the wooden slats between the seat and the lower section.

Assemble the back of the chair and reattach it once you’ve finished inserting the wooden parts. This ought to bring the seat up a couple of inches.

Since this is a new area for you, it is highly advised that you seek the assistance of an expert, as the process is highly technical in nature.


The base of certain chairs is predrilled for a bolt, allowing for easy assembly. Get out of your seat and move the bolt around.

To adjust the height of the chair, just raise or lower the bolt and stop it at the desired height.

Sit down in the chair to see if it is at the right height. When ease of use is ensured, the job is done. If it isn’t, tweak it some more and try again till you reach the desired height.


You can customize your comfort on your office chair by adjusting the height of the back and the arms. The backrest and armrest heights of these chairs can be adjusted vertically.

It’s not enough to merely set your chair at the right height; you also need to adjust the back and armrests so that you’re sitting in the most comfortable and healthiest position possible.

That’s why it’s crucial that you tweak the chair’s settings until you find the perfect combination of height, recline, and arm support. When you’ve found a comfortable position, you can lock the chair’s tilt to keep it there.

Chair to get the Correct Sitting Posture

Because of the negative impact poor sitting posture can have on your health, it’s important to find a chair that provides the proper support you need without sacrificing comfort.

The ideal seat contours to your shape while providing ample support. By adhering to these guidelines, you can get the most out of your office chair in terms of your health.

Following these instructions can help you achieve optimal posture by strengthening your core and relieving pressure on your lower back.

1. Adjust the chair height

Commonly, the arrowed lever for this function can be found on the right side of the device. Adjust the chair so that the inside of your elbows is level with the surface of the desk. If you have a standing desk that can be adjusted to different heights, you should put the desk at elbow level and your chair at the height that is most comfortable for you.

2. Ensure your feet are firmly on the floor

Make sure your feet are flat on the floor and lean back in your seat. Proper foot support is crucial for the health of your lower back and your posture. A footrest is necessary to correct poor posture caused by feet that aren’t flat on the floor.

To achieve the optimal foot elevation, leg, and knee position, use a footrest.

3. Adjust the Chair angle

The seat of an ergonomic office chair can be swiveled or tilted to accommodate a variety of user preferences. In most cases, you can find this lever on the right side of the vehicle, toward the trunk.

The most relaxed and healthy sitting position is one in which the back of the chair is horizontal or slopes backward. Even so, it can cause you to move away from your desk ever-so-slightly. Pressure beneath the thighs is reduced, the hip angle is opened, and back posture is enhanced when one sits at a modest forward incline with respect to one’s desk.

4. Adjust the backrest angle

The lever to alter the recline angle is often found on the right and marked with directional arrows. To get the most out of an ergonomic workspace, it’s ideal to sit up straight. Reclining the backrest is excellent for the back and makes for a nice change of pace when chatting, in meetings, or reading off the screen.

5. Adjust the backrest height

A supportive backrest is essential for a relaxing computer chair. The bulk of this padding needs to be situated in the lower back, around the waist.

There is no standard for the height of the backrest adjustments. There may be a knob or lever at the seat’s base that has to be loosened. A ratchet mechanism should be used if there is no other way to make an adjustment (such as a knob or lever). It’s easy to make fine-tuned modifications by just clicking and pulling upwards. When the backrest is fully extended, it returns to its lowest starting position.

6. Adjust the armrest height

If an individual is unable to get as near to a desk as they would like to because of an armrest, their posture will suffer. Armrests that are moveable should be tucked under the desk if possible. This eliminates any potential distractions, allowing you to sit as close as possible while still keeping your arms at your sides.

The aforementioned range of motion is only the maximum range of adjustment available on some seats.

Adjustable lumbar support in a chair’s backrest allows the support to be made more or less prominent as needed. This provides for a more ideal fit between the user’s natural low back curve and the chair’s low back support, negating the potential for lower back strain.

In a chair equipped with a “synchro” mechanism, the backrest reclines and can be locked in place or released at will. If you ever experience the backrest giving way and falling backward, simply turn the tension knob (which is often located under the seat) until it feels secure.

Frequently Asked Questions (FAQs)


Adjusting the height of your office chair can be accomplished in a few of the ways described above. What follows is a list of the most convenient and straightforward alternatives:

  • Adjust the height by means of a lever.
  • (In the event that your chair doesn’t have a lever) A threaded post.
  • The gas lift cylinder should be made longer.
  • Fill the bottom with wood planks.
  • Swap out the small wheels or casters for something more substantial.
  • Use an extension set
  • Take use of an extension kit.
  • Insert a pillow under your seat to increase your height.
  • Change to a more spacious chair.


There are many advantages to maintaining the proper height for your office chair.

First, working at the ideal height improves both comfort and concentration. In addition, your spine and neck will thank you for taking care of your posture while seated.

As a result, proper sitting posture alleviates aches and pains caused by improper attitudes while seated.

The productivity of workers can be increased with the help of a well-adjusted office chair.

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If the screws on the replacement cylinder aren’t properly set, this could happen.

Too much tightening of the screws will cause the air cylinder to stay on continuously. In this way, the air will rise on its own. Additional body weight on the chair may also cause it to sink.

What does the knob on the bottom of a chair do?

If you turn the knob at the base of a chair, you can alter how far back the seat reclines. It also has the ability to adjust the height of your feet in relation to your seat.

The point is that you can make these modifications with one hand while still sitting in front of whatever it was you were using previously. Previously, you would have had to either lean over or get up to make these changes.