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Chair Armrest Hitting the Desk: How to Adjust or Remove It Without Wrecking Your Posture

February 24, 2026 kixm@hotmail.com 0 Comments 0 tags

Chair Armrest Hitting the Desk: How to Adjust or Remove It Without Wrecking Your Posture

If your chair arm hits your desk, you may lean forward and strain your back. Use these ergonomic adjustments (or remove the arms) while keeping good posture.

In a nutshell:
You can get yourself into a mess if the arms of your chair hit your desk, neither allowing you to slide the chair all the way in. If that describes your situation, and if your posture suffers and/or your arms get sore, here are the suggestions that I recommend in increasing order of effort, so try them in order: first, lower your armrests all the way down. If that doesn’t work, make the chair tiresome to lean on. Narrow the arms, widen them, make them unsuccessfully try to kill you, or move them all the way out of the way (ideally). If you can’t move them beyond your elbow when they are at their lowest, I recommend removing them and either attaching them to another chair or using them as a very sturdy biomagnetic. You may need to rig some kind of protective cover for it when you attach to the next chair. After you have removed them, try to protect your posture by keeping the elbow as close to your side as possible and not sticking out when you keyboard or paint. Be sure to keep the shoulders down and carry the entirety of the weight while typing or mousing with the forearms resting on something (the table or tray) instead of suspended in the air (which pulls the shoulder up). After that.

NOTE: This letter is not intended to be medical advice. While I highly recommend it, if you have ongoing problem with your arm, persistent numbness, tingling, and pain especially in the elbow/hand, you may want to see a clinician or an ergonomics professional

Call out a quick 60 second diagnosis (before you start screwing arm out, changing preconditions, or doing anything)): Sit all the way back in the chair so that your low back is supported, and let your pathetically drooping shoulders drop (don’t shrug). If there is any way to see do what profit/pain score you can and report yourself in. Scoot in toward the desk until your elbows are approximately under your shoulders (not in front).
Now observe what stops you: (A) the armrest top impacts the desktop, (B) the armrest frame impacts the desk underside/apron, or (C) the armrests fit but your thighs impact the underside so you raise the chair and now the arms impact.
Take note of your compensation: Are you leaning forward, winging elbows out, or hiking your shoulders? That compensation is what you are aiming to remove.

The goal posture (what you want to be aiming for)

Shoulders relaxed; upper arms close to the torso (not winged out).
Elbows generally around 90–110 degrees while working (depends on body and task).
Forearms roughly level to rest surface for keyboard/mouse; wrists not bent up/down or side-to-side.
You can sit reclined in the chair with back support (many of us recommend a reclined posture rather than rigid upright sitting).
You can pull the chair in so closely that you do not reach for the keyboard/mouse.

Fixes in the proper order (from least invasive to most)

1) Lower the armrests (and don’t use them as “typing shelves”)

If the tops of the armrests are hitting the desk, lower them so the chair can slide in. A good target is: that when your arms hang easily at your sides that the armrest lightly contacts your forearm—as it should without lifting your shoulders.

If lowering armrest tops makes you feel like you are “drooping, don’t solve it by shrugging up. Instead, bring the keyboard/mouse surface to you (see steps 3–4).

2) Change armrest width/position (if your chair allows it)

Some armrests adjust inward/outward, pivot, or slide forward/back.
If the armrest frame is colliding with the desk edge or the bottom side of the desk, try widening them slightly or setting them further back so that the front corner clears the desk. Your elbows should still be in close to your body—don’t set the armrest so wide that you have to lift your shoulders or have a “chicken wing” out to the side.

3) Adjust chair height the right way (now desk isn’t forcing you into bad arm angles)

Set seat height so that feet are supported, (ideally flat on the floor if you can attain that).
Check thigh clearance: you want some space in between the top of your thighs and the underside of the desk so that you can slide in comfortably without raising your shoulders unduly.
Now check height of your elbows in relation to surface of keyboard: if desk is too high, you will tend to lift your shoulders, if too low, you might slump, or bend wrist upwards.
If you raise the chair to get level with the desk, common with tall desks, you’ll need to add a stable footrest underneath so that your feet are supported. This often breaks the “chain reaction” whereby you are raising the chair height, which raises the armrest height, then starting in with a few minor niggling adjustments before the arms start slapping down on the desk!

4) Bring the keyboard and mouse closer/lower (often the solution!)

Now…with a few adjustments made above to stop it colliding with everything else, pull the keyboard closer to the desk, getting it closer and further in without “reaching” for it (but with your wrists still neutral, not bent over edge).

Keep the mouse right next to the keyboard, at the same height—reaching out to the side is an all-too-common shoulder irritant.
If the desk is high and non-height-adjustable, a keyboard tray (install lower) can let you keep shoulders relaxed while sitting closer in—which also means you may not need tall arm rests.

5) If arm rests still block you: remove them (yes, that can be the ergonomic choice)

If arm rests can’t be adjusted down to stop interfering with the desk, removal is often better than keeping them and being forced to constantly lean, twist and stretch. You should be able to slide into the chair and work with your back supported and arms close in to the torso.

How to remove a chair’s arm rests safely (no new problems!)

If your chair is under warranty, be sure checking on whether arm removal affects coverage—and definitely don’t modify a “structural” piece of the chair aside from taking off bolts or screws the manufacturer intended for moving/removing the arm rests.

Photograph the points the arm rests are attached to (both sides!) before taking parts apart so you’ll know how to re-assemble them.
Carefully flip the chair so it faces downward (or on its side) on a padded surface, so you won’t hurt the caster/floor with the bottom of the chair. You may need to remove some plastic shielding to get to the mounting bolts. They are commonly found under the seat pan itself, and also on the side of the chair. Make sure you have the proper tool; often an Allen (hex) wrench will do.
Have another hand on that end of the arm rest while you remove the last bolt so it won’t drop and strip the thread if it slams into the side of the chair in the process. Keep the bolts and washers in a bag with the Left and Right marked on it, and don’t let the arm rests get separated from one another. Inspect the desk after removal for sharp edges, exposed brackets, etc; cover sharp things that might catch on clothing/skin.

after removing armrests: prevent slumping (the no-slumping setup)
The damaging tendency that removing armrests most often leads to isn’t “bad posture because you’re without arm support,” but to placing the keyboard/input device too far away–or too high, respectively: all this tends to make you reach and round forward. Fix the workstation so that your arms can work in a neutral, close-to-the-body position without needing armrests to support them:

Scoot the chair in so that, with your hands on the keyboard, your elbows fall comfortably near your sides. Let your forearms rest on the desk surface (or a correctly positioned keyboard tray) rather than “hovering” there for hours. Relax the shoulders. If you feel tightness at the tops of the shoulders, it’s a sign that your work surface is too high (or you’re reaching),
Use back support and allow Yourself some lean back; often people are able to do this longer than they can stiff sit upright.
Take many micro-breaks: drop your hands for mere moments to your lap, roll the shoulders, and then return yourself to your best posture position.

Don’t “hang” your elbows on the hard edge of the desk. If the edge of the desk is sharp, consider a desk-edge pad or a repositioning so that contact pressure is reduced.

Common scenarios (and the most likely fix)

Troubleshooting when chair arms hit the desk
What you notice	Likely cause	Fix to try first
You can’t get close to the desk; you lean forward to type	Armrests (or their frame) block the chair from sliding in	Lower armrests; move them back/widen; remove if non-adjustable
Shoulders feel “hiked up” when hands are on keyboard	Keyboard surface is too high relative to your seated elbow height	Lower keyboard (tray), raise chair + add footrest, or adjust desk setup
Elbows flare out wide to avoid hitting armrests	Armrests too narrow/in the way; desk too close to armrest front	Widen/pivot armrests or remove them
Forearm/elbow discomfort where it contacts armrest/desk	Hard edge contact pressure	Add padding, reduce contact time, adjust height/position
Armrests clear the top but hit the underside supports	Desk apron/crossbar interferes	Move armrests back (if possible) or remove arms; consider a different desk layout

How to verify your setup is actually better (simple checks)

The “slide-in” test: you can pull the chair close enough that your back can stay against the backrest while your hands reach the keyboard/mouse.
The “shoulder drop” test: put hands on keyboard, then consciously drop shoulders. If your hands have to lift to stay on the keys, the surface is either too high or too far away.
The “elbows under shoulders” test: look from the side—if your elbows are drifting forward, bring your input devices back or lower them.
The “no pressure point” test: after 20-30 minutes you shouldn’t feel sharp pressure at the elbow/forearm from the hard edge (an armrest or desk).

Mistakes that make posture worse (even if the armrests have quit hitting):

Lowering the armrests, but then shrugging the shoulders ‘up’ in order to “meet” the lower height of the desk.
Removing the armrests, but leaving the keyboard/mouse too far forward, necessitating reaching for them!
Resting the forearms hard on the arm rests for long periods of typing/mousing (this may well increase the contact stress at the forearm/elbow joint).
Raising the chair to meet a tall desk surface, but not supporting the feet (so they slide forward, loosing the backward back support along with the feet).
Fixing the chair, but not the desk obstacles (apron/crossbar) that still keep your arms from being too positioned for optimal use.

Quick checklist: best-practice setup when the armrests aren’t usable:

Chair can slide in close to desk without collision.
Feet can be supported on floor or footrest. Lower back is snug. Slight recline is comfortable.
Keyboard can be close to one’s body; mouse is adjacent (to keyboard) and at same height.
Elbows are close to the sides; no shrugging shoulders.
No sharp pressure points at the desk edge or at the elbow. Office chair armrests, in many cases, can run into the same problem as the “big chair” threat; they can be positioned wrong, interfere with your mobility, and force you into an uncomfortable position.

However, while we can all come up with an excuse why office chairs in general are not for us, armrest specific problems present some interesting challenges:

FAQ

Is it “bad” to take the armrests off of an office chair?

Not necessarily. The problem is that without the armrests, if there is no other support readily available, your arms hang freely, which encourages that shoulder slump position – not necessarily in open combat with office chair armrest. That “reach” causes indirectly worse posture. There are many ergonomics guidelines that assert that if the armrests cannot be properly adjusted, so that they do not interfere with your workstation, which is obviously the ultimate goal, removing them completely is a reasonable solution.

If I take the arms off my office chair, won’t my shoulders get tired and sore from holding my arms up, with no support?

They can and will, if the keyboard/mouse location is far away or too high. Bring the input devices closer and/or lower (often a keyboard tray below the level of the desk). For many of us forearm support from the desk or tray as we work is far more conducive to a good work posture than locating our chairbears perfect.

Am I supposed to keep my forearms on the arms of the chair while I am typing?

There are many ergonomics resources on the web that recommend that we keep our elbows near the sides of our body, and to Avoid putting sustained pressure on the arm rests. Using armrests is fine, but not while you are actively keying or mousing, at least the overwhelming thought is that arms should not be in contact with anything for a long period of time as doing so will create pressure on soft tissues, building up heat and pressure on nerve endings. Use those arms to help your arms favorably in frequent brief resting and transitions. Neutral wrists and shoulders are preferable while working.

Am I doomed to hurt my eyes and neck, as the desk is the problem and not the chair?

This can be true, in fact, very often is. The fixed desk can be too high, or the barrier bad underneath, getting in the way of the chair. In that case a keyboard tray or a height adjustable desk or a desk with more clearance may be a better solution than the changing of chairs.