Best Office Chairs for Tall People: How to Find the Right Fit

Why Height Alone Does Not Tell You Which Chair Will Fit

Two people who both measure 6’2″ can need completely different chairs. One
carries that height in their legs, the other in their torso. The first
needs seat height and depth. The second needs back height. Same number on
the tape measure, opposite problems.

The Canadian Centre for Occupational Health and Safety puts it plainly: an
ergonomic chair has to suit the individual’s body dimensions, their
workstation, and the work they do. No label on a box can establish that.

So before you shop, work out where your current chair is actually failing
you. Is it under your thighs, behind your lower back, or up at your head?
That single answer narrows the field faster than any “big and
tall” filter.

How Tall Should the Backrest Be?

There is no single backrest height that works for everyone over 6 feet.
Anyone who gives you one number is guessing.

You will find online formulas that estimate torso length at roughly 27% of
your standing height. The most widely shared version traces back to an
informal Reddit analysis of 45 responses about fitting backpacks. Even the
person who wrote it tells you to measure yourself instead. It was never an
office chair sizing standard, and it should not be treated as one.

The bigger problem is the endpoints. A backpack torso measurement runs
from the base of your neck to the top of your hip bones. That is a
different span from measuring upward off a chair seat, and adding an
average head height does not convert one into the other.

For support from your lower back through to your head, you want a
backrest and headrest that suit your seated proportions, with enough
adjustment left over to position both.

One useful thing to let go of: the headrest does not need to reach the top
of your skull. It needs to reach the part of your head or neck it was
designed to support, and no further.

A Practical Way to Measure for Head Support

Use these as a shopping aid, then confirm by actually sitting in the chair:

1. Sit naturally on a firm, level seat. Feet supported,
   eyes forward. Do not stretch upward to make yourself taller, which
   everyone does and which ruins the number.
2. 
   Have someone measure vertically from the seat surface to where you
   want the headrest to meet you.
   
   Decide whether you want support behind your head or lower, around the
   upper neck. They are different targets.
3. Ask the retailer for the matching chair measurement.
   Specifically: how high does the headrest’s contact area sit above
   the seat, at its lowest setting and at its highest?
4. Check it reclined as well as upright. Cushion
   compression, backrest angle and headrest shape all move where the
   support lands once you lean back.

Here is why step 3 matters. If your preferred contact point sits 31 inches
above the seat, you need a headrest whose usable contact area reaches 31
inches. A listing that says “31 inch back” tells you almost
nothing, because you do not know where that measurement started or whether
the top few inches are a frame that never touches you.

Read Chair Dimensions Carefully

Before you compare two models, make sure their numbers describe the same thing.

One thing to avoid: subtracting a minimum dimension from a maximum to work
out backrest height. Those two figures often refer to different adjustment
settings, and the result is meaningless.

Seat Depth: The Measurement Tall Buyers Skip

Long legs usually need a deeper seat, but there is a limit, and going past
it is worse than coming up short. If the seat presses into the back of
your knees, you will unconsciously slide forward to relieve it, which
takes your lower back off the backrest entirely. Now you have an expensive
chair supporting nothing.

The test is simple. Sit right back so your lower back is against the
backrest, then check the gap between the front edge of the seat and your
calves. CCOHS guidance puts that at roughly 2 inches, or 5 cm.

Measure this with your back where it belongs. It is easy to perch forward,
get a comfortable gap, and buy a chair that only works in a posture you
will not hold.

Chair Features Worth Prioritizing

Seat height and depth. You want a range that lets you sit
with your feet supported, and a seat deep enough to carry your thighs
without catching behind your knees. Adjustable seat depth earns its keep
if your leg length sits outside the average.

Backrest and lumbar position. Support needs to meet your
lower back where your lower back actually is. A taller backrest only helps
if its contours land in the right place too.

Armrest fit. Check height and spacing together. You
should be able to rest your arms without the armrests stopping you from
pulling up to your desk.

Width and capacity. These are separate from height, and
confusing the two is the most common mistake in this category. A tall,
slim person may need a high back and a standard width seat. Someone with a
larger build may need extra width and a higher weight rating but no
additional back height at all.

Six Chairs Worth Comparing

Below are six models from our range, with the dimensions exactly as they
appear on our product pages today. Read the gaps as carefully as the
numbers.

Now read that table the way we just taught you to. Three
of these chairs publish a back height. Not one of them states where the
measurement begins. A 28 inch back measured up from the seat and a 28 inch
back panel measured on its own are not the same chair, and they will not
meet you in the same place.

So here is our honest position. We are not going to claim that AP120,
AP996 or AP997 will support your head at 6’4″, because our published
dimensions do not prove it. What we can say is which ones have the taller
published backs and the most adjustment, and that we will measure any of
them for you before you buy. Ask us for seat to top of backrest and we
will go and put a tape on it.

A few notes worth having:

• AP996 and AP997 publish identical dimensions right down
  the list, with the only difference being overall width, 32 inches
  against 30.5 inches. Ask us which suits your desk setup, because on
  paper they support you the same way.
• AP999 carries the highest capacity here at 500 lb, but
  it has fixed padded arms and no published seat or back dimensions. If
  you need both the capacity and a confirmed back height, ask before
  ordering.
• AP3788-2 is the only one with a height adjustable
  backrest and a removable headrest, which is genuinely useful when your
  torso is long. Its published overall height range of 34 to 49 inches
  reflects that adjustment, but overall height is measured from the floor,
  so do not read it as back height.
• AP1879 has a head cushion and a back cushion, but a 250
  lb capacity and no published dimensions. It is a gaming chair first.

A weight rating answers a different question from body fit, and
“high back” is a prompt to ask for the measurement rather than
a substitute for it.

Adjust the Chair, Then Check Your Desk

Once you are seated, keep your feet flat, set the backrest into the hollow
of your lower back, and leave that 2 inch gap behind your knees. Adjust
the armrests with your shoulders relaxed rather than hunched up around
your ears.

Then look at your desk. Your legs need to fit underneath freely. If the
desk is too low, dropping an otherwise well adjusted chair to compensate
just moves the problem into your shoulders and wrists. The chair and the
desk have to work as a pair, and for tall users the desk is very often the
actual culprit.

Try Before You Buy

Bring your measurements to our
Concord showroom
and sit in the ones you are weighing up. Get in touch before you come so
we can confirm which models are on the floor.

Test each chair at a working position and then leaning back. Pay attention
to where the backrest and headrest actually touch you. A chair can look
enormous and still finish too low, and you will only find that out by
sitting in it.

FAQ: Tall Users and Chair Fit

Sources

1. CCOHS: Office Ergonomics, Ergonomic Chair
2. CCOHS: How to Adjust Office Chairs
3. Informal Reddit torso length analysis,
   referenced as background only and not used as an ergonomic sizing standard.

Chair dimensions in the comparison table were taken from our own product
pages in September 2026. Where a figure is marked “not
published”, the product page does not state it. Contact us and we
will measure the chair.