Best Office Chairs for Heavy People: A Buying Guide

Every chair here is ranked from its listing, and this list includes only chairs whose listings state a weight capacity of 300 pounds or more. Treat that number as a ceiling to stay under, not a target to approach. If a listing does not state a rating, the table says so, and you should ask the seller before buying.

The Ergo Score reflects the stated figure in tiers: 6 points at 300 pounds or more, 4 points from 250 to 299 pounds and 2 points under 250. A chair with a high rating is not automatically a good fit, because comfort depends on the seat, the back and the adjustments as well.

OSHA's chair guidance says a seat should be wide enough to accommodate the majority of hip sizes and that chairs with oversize seat pans should be provided for larger users. It also says armrests should be wide enough to allow easy entrance and exit from the chair.

Seat width and depth appear in many listings but not all of them, so treat fit as unconfirmed until you have seen those figures, and check the return policy.

OSHA recommends a strong, five-legged base and casters appropriate for the type of flooring at the workstation. The Ergo Score gives build points for base material and for a gas lift class, so those lines are worth comparing.

Check that the chair rolls and swivels smoothly on your floor, and that the seat height adjusts through its full range without hesitation.

NIAMS names job-related factors, including desk work with poor posture, among the risk factors for back pain, and it advises getting up and changing positions during long periods of sitting. That advice applies to everyone, whatever their size, and a chair that makes it easy to shift posture helps you follow it.

Use the ranked table to compare the stated capacity, seat height range and armrests across the picks.

• Weight capacity: scored in tiers by the stated rating, which is the first number to confirm on any listing.
• Base: the score gives more points for aluminum than for steel or metal, then nylon, then plastic, and OSHA calls for a strong five-legged base.
• Gas lift class: Class 4 earns 2 points and Class 3 earns 1, a line worth checking when the seat will be raised and lowered often.
• Seat height range: 4 points for a stated adjustable height and 2 more for a range of 4 inches or more.
• Armrests: scored by how many directions they adjust, and OSHA says they should be wide enough for easy entrance and exit.

1. Confirm the stated weight rating before the chair arrives, and keep to it.
2. Roll the chair onto your usual floor and check that it moves and swivels smoothly.
3. Raise the seat until your feet rest flat with the back of your knees slightly higher than the seat, as OSHA describes.
4. Set the backrest and lumbar support so you can sit fully back in the seat.
5. Adjust the armrests so you can get in and out easily and your lower arms are supported.
6. Stand and move around at regular intervals, following the NIAMS advice to change positions during long sitting.

If you have back pain that does not improve after a few weeks, is severe or not relieved by medication, NIAMS says to seek care. It also lists numbness or tingling, leg weakness or pain, trouble urinating and unintended weight loss. Contact a provider right away if you have back pain after a severe blow or fall, with an unexplained fever, with difficulty walking or keeping your balance, or if you lose control of your bladder or bowels or have weakness or numbness in your buttocks, thigh, leg or pelvis. MedlinePlus lists these as reasons to call your provider without waiting.

A better chair can help posture and comfort; it is not a medical treatment. If pain persists, see a healthcare provider. Rankings come from specifications; we have not tested these chairs in person.