Keyboard height is the one ergonomic measurement with a single unambiguous answer: the height of your elbows, when your shoulders are relaxed.
Everything else people argue about — wrist rests, keyboard tilt, split layouts, negative tilt — is downstream of that number. Get it wrong and the rest is decoration.
Measure it properly
- Sit back in your chair the way you actually sit, not bolt upright.
- Let your arms hang, then bend your elbows to 90 degrees.
- Have someone measure from the floor to the underside of your forearm, near the elbow.
That is your keyboard height. For most adults it lands between 58 and 70 cm — and note that you are measuring to the top surface of the keyboard, not the desk, so add 2–4 cm for the keyboard's own thickness if you are comparing to a desk spec.
The common error is measuring with the shoulders shrugged. Shoulders creep up when you are concentrating, which is exactly why so many desks — especially fixed-height ones at 73–75 cm — end up a few centimetres too high. A desk that is 3 cm too high puts constant load on the trapezius and shows up as a knot between the shoulder blade and the spine.
The signs your keyboard is at the wrong height
| Symptom | What it usually means |
|---|---|
| Ache or tightness across the top of the shoulders | Keyboard too high, or elbows too far from your body |
| Tingling in the fingers, wrist pain | Wrist bent upward while typing — often a keyboard that is too high or a wrist rest used as a palm rest |
| Forearm fatigue by mid-afternoon | Elbows unsupported and held above 90 degrees |
| Reaching forward to type | Keyboard too far away, usually because the monitor is too far |
| Shoulder that hurts when reaching behind | Elbows pinned too close for hours — the opposite problem, and rarer |
Two of these — tight shoulders and wrist tingling — are the ones people try to fix with equipment. Both are usually geometry.
About wrist rests: read this before buying one
A wrist rest is for resting in, not resting on. If you plant your wrists on it and keep typing, you have just created a fixed bend at the wrist and compressed the carpal tunnel — the exact thing the rest is marketed to prevent.
Used correctly, you rest on it between bursts of typing, with your hands hovering or lightly contacting the keys while working. If you find yourself unable to type without it, the keyboard is too high.
The better fix for most people is a negative tilt, where the back of the keyboard is lower than the front, letting the hands sit in a more neutral angle. Many keyboards have flip-out feet at the back — those create positive tilt, which is the opposite of what you want. Flip them in, or flip them out and accept that it depends on your desk height.
Where the mouse goes
Same surface height as the keyboard — your elbow height — and next to it, not behind it or across the desk.
The mouse is where most setups quietly fail. Three problems, in order of frequency:
- Too far away. Reaching for the mouse rotates the shoulder forward and outward for hours. Keep the mouse within a hand's width of the keyboard's number pad edge.
- Too high. If the desk is slightly too high, the mouse is worse than the keyboard, because the mouse is a sustained hold rather than a tap.
- Wrist bent sideways. On a hard desk with no padding, people cock the wrist outward. A small gel rest under the wrist — not the palm — or simply a lower desk fixes it.
If you use both a keyboard and mouse heavily, a compact keyboard with the number pad removed moves the mouse 8–10 cm closer, which is a bigger ergonomic win than most $200 accessories.
When the desk cannot be lowered
This is the most common real-world situation: a fixed desk at 74–75 cm and a keyboard height of 66 cm. You cannot cut the legs. Options, roughly in order of value:
- Raise the chair so your elbows come up to the desk. Then fix the consequences: your feet now dangle, so you need a footrest ($20–$60). This is the standard fix and it works.
- A keyboard tray ($40–$150) that mounts under the desktop and drops the keyboard 5–10 cm. Excellent if it goes low enough; check the minimum drop, and check that it does not force your knees into it.
- A lower keyboard. Low-profile keyboards sit 1–2 cm lower than mechanical ones — helps a little, not a lot.
- Replace the desk. If the gap is more than about 8 cm and the desk is used 8 hours a day, this stops being an accessories problem.
Whatever you do, do not solve a too-high desk by slouching. Lowering your shoulders to meet the desk trades wrist pain for neck pain.
Sit-stand desks
For a height-adjustable desk there is no excuse — set the sitting position first, then set the standing position, and save both. The sitting height still follows the elbow rule; the standing height sits about 1–3 cm below your standing elbow, which is slightly counterintuitive.
If your desk's minimum height is above your seated elbow height, no chair adjustment will fully save it. Check this against your body before buying — the numbers are in desk height for short people, which covers the case where desks are systematically too tall.
Get your exact targets from your height in the desk and monitor height calculator.
The 30-second self-check
- Elbows at about 90 degrees, arms hanging without effort
- Shoulders down — not shrugged, not reaching
- Keyboard top surface at elbow height
- Mouse beside the keyboard, not beyond it
- Wrists roughly straight while typing, resting only between bursts
- Feet flat on the floor or on a footrest
If your shoulders are tight but your elbows look fine, the problem may not be the keyboard at all. The sitting posture type test separates the four common patterns — a forward head, a rolled-back pelvis, and a one-sided lean each create shoulder tension that no keyboard height will fix.
FAQ
What is the correct keyboard height?
Your seated elbow height — measured with shoulders relaxed and elbows at 90°, from the floor to the underside of your forearm. For most adults that lands between 58 and 70 cm. Measure to the top surface of the keyboard, not the desk, so add 2–4 cm if you are comparing against a desk specification.
Should I use a wrist rest?
Only for resting between bursts of typing, never for resting on while typing. Planting your wrists and continuing to type creates a fixed bend at the wrist and compresses the carpal tunnel — the exact thing the rest is marketed to prevent. If you cannot type comfortably without one, your keyboard is too high.
Should the mouse be at the same height as the keyboard?
Yes, and beside it — not behind it and not across the desk. Too far away is the most common mouse error and it rotates the shoulder forward and outward for hours. Switching to a compact keyboard without a number pad moves the mouse 8–10 cm closer, which beats most accessories costing ten times as much.
What do I do if my desk is too high and cannot be lowered?
Raise the chair until your elbows reach the desk, then add a footrest — both parts are required, and doing only the chair is the most common mistake. If the gap is more than about 8 cm, an under-desk keyboard tray ($40–$150) that drops the surface 5–10 cm is the better fix. Do not solve it by slouching: you will trade wrist pain for neck pain.
Why do my shoulders hurt when my elbows look fine?
Because shoulder tension has causes beyond keyboard height — a forward head, a rolled-back pelvis, and a one-sided lean each produce it, and none respond to a keyboard adjustment. Check which pattern you are in before buying anything else.
Related
- Ergonomic desk setup: the complete guide — how keyboard height fits into the five numbers, and what to set before it.
- What height should your monitor be? — if the screen is too low you will lean forward, and leaning forward defeats the keyboard setup entirely.
- How to use a laptop without neck pain — the built-in keyboard is the reason a laptop cannot be ergonomic on its own.
- My desk is too high and I can't adjust it — four ways out, picked by the size of the gap.
- How to set up a standing desk — two heights to set, and the sitting one is the one people get wrong.
Get your exact numbers
Enter your height and see the desk, chair, and monitor heights that fit you — about 30 seconds.