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How to Adjust the Office Chair Correctly for Comfort at Work

22 April 2024

How to Adjust the Office Chair Correctly to Sit Comfortably?

As a lot of us spend countless hours sitting at our desks in today's workspaces, getting your chair to just the right setting has never been more critical. A well-adjusted chair not only enhances comfort but also prevents long-term health issues related to posture and back strain. But how can you adjust the office chair correctly?

This comprehensive guide delves into the intricacies of adjusting your office chair to fit your body's needs. From the height and depth of your seat to the subtleties of lumbar support and armrests, we cover it all. Follow our office chair adjustment instructions below to achieve the perfect chair setup!

Adjust Seat Height

The first step in customizing your office chair for maximum comfort and ergonomic benefit is adjusting the seat height. The goal here is to ensure that your feet are flat on the ground, with your knees at a 90-degree angle, parallel to your hips. This position promotes good circulation and minimizes stress on your legs and back.

How to Adjust:

1. Locate the Lever: Typically, the seat height adjustment lever is located right beneath the seat, often on the right side.

2. Raise or Lower the Seat: While seated, pull up on the lever to unlock the seat height mechanism. To raise the seat, lift your weight off the chair slightly; to lower it, remain seated. Release the lever once you've reached the desired height.

3. Test the Position: Ensure that your feet are flat on the floor and your knees are in line with your hips. Your thighs should be parallel to the ground.

Adjust Seat Depth

When you assemble office chair seat depth just right, it ensures you're supported comfortably without putting undue pressure on the back of your knees. The ideal seat depth allows you to sit back against the chair's backrest while leaving about 2 to 4 inches of space between the back of your knees and the seat of the chair.

How to Adjust:

1. Locate the Adjustment Mechanism: This may vary by chair model but is often a knob or lever under the seat.

2. Adjust the Seat: Slide the seat forward or backward to find the perfect depth. Some chairs may require you to stand to adjust this setting.

3. Ensure Proper Clearance: There should be a small gap of about 2 to 4 inches between the seat's edge and the back of your knees for better blood circulation.

Adjust Backrest Resistance

The resistance of the backrest affects how easily your chair tilts back, crucial for supporting your movements and varying postures throughout the day. Ideally, the backrest should offer enough resistance to support your back comfortably without making it difficult to recline.

Many advanced office chair models, like the FlexiSpot BS10, allow you to adjust the backrest resistance with a knob. As shown below, the tension knob on the FlexiSpot BS10 features a clear indicator for the adjustment: the "+" symbol signifies an increase in resistance, while the "-" symbol indicates a decrease.

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If your chair is equipped with this function, you can adjust it according to your preference.

How to Adjust:

1. Find the Tension Knob: Look for a knob under the seat or at the base of the backrest. This controls the tension.

2. Adjust the Tension: Turn the knob clockwise to increase resistance, making the backrest stiffer. Turn it counterclockwise to decrease resistance, allowing for easier reclining.

3. Test and Adjust: Sit back and test the resistance. It should allow you to lean back comfortably without feeling like you're straining or going to fall backward. Adjust until you find the perfect balance.

Adjust Seat Tilt/Inclination

Adjusting the seat tilt or inclination helps in aligning your posture and distributing your weight evenly across the seat and backrest. A properly adjusted seat tilt can alleviate pressure on your thighs and lower back, promoting better posture and circulation.

How to Adjust:

1. Find the Tilt Adjustment Lever: This lever is usually located beneath the seat, often alongside the height adjustment lever but controls the angle of the seat.

2. Adjust the Tilt: While seated, unlock the tilt mechanism using the lever. Lean forward or back to adjust the tilt to your comfort. Lock the lever once you find a comfortable angle.

3. Find Your Ideal Angle: Adjust the seat tilt to support your preferred posture. This might mean a slight forward tilt for task-focused work, or a slight recline to relax. Th

e key is to ensure that regardless of the tilt, your feet can stay flat on the floor, and your thighs remain parallel to the ground.

Adjust the Height of the Backrest

The height of your backrest is crucial for supporting the natural curve of your spine, especially the lumbar area. Proper adjustment can prevent back pain and improve your posture over long periods of sitting.

How to Adjust:

1. Locate the Backrest Adjustment: This could be a knob, lever, or ratchet mechanism, depending on your chair model, usually found on the backrest stem or at the side.

2. Adjust the Height: For chairs with a lever mechanism, hold it and slide the backrest up or down to match the curve of your spine, particularly where it curves inward at your lower back. Chairs with a ratchet mechanism require you to lift the backrest to the top before it can drop down to start the height adjustment anew.

Adjust the Lumbar Support

Proper lumbar support is crucial for preventing strain on your lower back, especially during long periods of sitting. It encourages a healthier sitting posture and supports the natural inward curve of the lumbar spine.

How to Adjust:

1. Find the Lumbar Adjustment: This could be a knob, a sliding mechanism, or an inflatable cushion, depending on your chair model, typically located on the backrest.

2. Adjust the Support: To correctly adjust the lumbar support of your office chair, increase or decrease its height to fit the natural curve of your lower back snugly. If your chair allows, adjust its depth to feel the support without it pushing you too far forward.

3. Check the Position: Ensure the lumbar support is positioned at the inward curve of your lower back. You might need to adjust the backrest height simultaneously to

get the perfect alignment.

Adjust the Headrest

A well-adjusted headrest supports your head and neck, reducing tension and promoting a neutral posture. It's particularly beneficial for those who experience neck stiffness or pain.

How to Adjust:

1. Locate the Adjustment Mechanism: This might be a knob or button on the headrest itself, or simply a manual push/pull motion, depending on the chair model.

2. Adjust for Height and Angle: Raise or lower the headrest so that it comfortably supports the back of your head just above the neck. If your chair allows, tilt the headrest's angle to ensure it doesn't push your head too far forward or allow it to tilt too far back.

3. Ensure Comfort: The ideal position is where the headrest lightly touches the back of your head when you're seated upright, and your neck feels relaxed. It should not

force your chin down or restrict your movement.

Adjust Armrests

Armrest adjustments can greatly influence your posture and comfort. Properly adjusted armrests allow your arms to rest comfortably, reducing the risk of strain on your shoulders and neck.

1. Locate the Adjustment Controls: Armrest adjustments may include height, width, and sometimes even angle. These controls are typically located on or beneath the armrest.

2. Set the Height: Adjust the armrests so your shoulders are not hunched, and your elbows rest comfortably at a 90-degree angle. This helps maintain proper posture and reduces strain.

3. Adjust Width and Angle if Possible: If your chair allows, adjust the width so your arms are not splayed too wide or squeezed too tightly. An optimal angle supports y

our usual tasks, whether it's typing or reading.

Adjust Movement Mechanics

The ability of your chair to swivel as you move allows you to reach various areas of your workspace without the need to stand up, promoting efficiency and reducing strain. A well-adjusted swivel feature allows for natural movement throughout the workday, increasing overall comfort and productivity.

How to Adjust:

1. Ensure Smooth Rotation: The chair should rotate freely 360 degrees, allowing you to turn effortlessly in any direction. This is essential for accessing different parts of your desk or office without twisting your body awkwardly.

2. Check for Obstructions: Make sure that nothing is obstructing the chair's base or wheels, as this can hinder smooth movement. Regularly cleaning the base and casters can help maintain optimal swivel functionality.

3. Lubricate if Necessary: If your chair is not swiveling smoothly, applying a suitable lubricant to the mechanism can improve movement. However, this should be done with caution and following the manufacturer's recommendations to avoid damaging the chair.


The effort to adjust the office chair correctly is an investment in your health, comfort, and productivity. Each adjustment outlined in this guide, from the height of your seat to the angle of your armrests, plays a pivotal role in creating an ergonomic seat that supports your body's needs throughout the day. Remember, there's no one-size-fits-all setting, and the key lies in fine-tuning each aspect of your chair to match your body's unique requirements. So, take the time to adjust the desk chair correctly, and transform your work experience into one that is not only comfortable but also conducive to your overall well-being and productivity.