The short answer: most office chairs are rated for 250 to 300 lb. The ANSI/BIFMA X5.1 standard that most office chairs are tested to is based on a 275 lb user, the weight of the 95th-percentile US man. Premium chairs go well past that: the Steelcase Leap, Gesture, Series 1, Series 2 and Amia are all tested to 400 lb, the Herman Miller Aeron is rated to 400 lb in size C, and the Steelcase Leap Plus is rated to 500 lb.
If you weigh more than about 300 lb, buy a chair rated at least 50 lb above your weight, and check the seat width as well as the rating.
Office Chair Weight Limits by Chair
| Chair | Weight rating | Seat width | Price, November 2026 |
|---|---|---|---|
| Steelcase Leap Plus | 500 lb | 22.75 in. | — |
| Steelcase Leap | 400 lb | 19.25 in. | About $1,124 (Amazon) |
| Steelcase Gesture | 400 lb | 20 in. | $1,208.25 (Amazon) |
| Steelcase Amia | 400 lb | — | $824 (Steelcase sale) |
| Steelcase Series 1 | 400 lb | 19.5 in. | $494.10 (Amazon) |
| Steelcase Series 2 | 400 lb | 19 in. | $515.25 (Amazon) |
| Herman Miller Aeron, size C | 400 lb | — | 25% to 30% off in Herman Miller’s sale |
| Secretlab Titan Evo XL | 395 lb | 19.3 in. (22.8 in. with side bolsters) | — |
| Herman Miller Aeron, size B | 350 lb | — | $1,613.50 with PostureFit SL (Herman Miller sale) |
| Herman Miller Mirra 2 | 350 lb | — | From $955.50 (Herman Miller sale) |
| Herman Miller Sayl | 350 lb | 18 in. | From $654.50 (Herman Miller sale) |
| Haworth Fern | 350 lb (325 lb with forward tilt) | 19.9 in. | $997 (Haworth sale) |
| Steelcase Karman | 350 lb | — | — |
| Hbada E3 Pro | 330 lb | 20.3 in. | From $519 (Hbada) |
| Herman Miller Aeron, size A | 300 lb | — | 25% to 30% off in Herman Miller’s sale |
| Herman Miller Embody | 300 lb | — | From $1,561 (Herman Miller sale) |
| HON Ignition 2.0 | 300 lb | — | — |
| Autonomous ErgoChair Pro | 300 lb | 19 in. | $469 (Autonomous) |
| SIHOO Doro C300 | 300 lb | 20.3 in. | $269.99 (SIHOO, code BF20) |
| Secretlab Titan Evo (S and R) | 285 lb | 17.7 in. (S), 18.5 in. (R) | $669 (R, Amazon) |
| IKEA Markus | 276 lb | 20.9 in. | $299.99 (IKEA) |
| Branch Ergonomic Chair | 275 lb | — | $359 (Amazon) |
| Branch Ergonomic Chair Pro | 275 lb | — | $499 (Amazon) |
| X-Chair X2 | 275 lb | — | From $615 (X-Chair sale) |
| UPLIFT Pursuit | 250 lb | 18.5 in. | $499 (UPLIFT) |
Ratings are each maker’s tested or warranted user weight, from spec sheets and store listings, November 2026. A dash means the maker doesn’t publish the figure. Herman Miller and Steelcase prices vary with configuration.
What a Weight Limit Means
A chair’s weight limit is the user weight the maker has tested it for and will cover under warranty. Going over it isn’t instantly dangerous, but parts wear faster, the gas cylinder and tilt mechanism take more load than they were tested for, and the maker can deny a warranty claim. Most office chair recalls have involved backrests detaching or bases breaking.
The BIFMA standards
- ANSI/BIFMA X5.1 is the standard most office chairs are tested to. Its 2017 version is based on a 275 lb user, the 95th-percentile US male; the 2011 version used 253 lb. Its tests include dropping weight onto the seat, swiveling and reclining under load, and loading the back, arms and casters thousands of times.
- ANSI/BIFMA X5.11 is the large-occupant standard. It’s based on a 400 lb user, and it was the first BIFMA standard with a size requirement: a seat at least 22 inches wide.
A chair labeled “meets BIFMA” is tested for roughly a 275 lb user unless the maker says otherwise. The 400 lb ratings on the Leap, Gesture and Aeron size C come from the makers’ own testing above that level. Of the chairs above, only the Leap Plus has a seat over 22 inches wide.
Best Office Chairs for Heavy People
Up to 350 lb: almost any premium task chair works. The Steelcase Series 1 is the cheapest chair in the table rated to 400 lb, at under $500 from Steelcase’s authorized Amazon seller. Compare it with the HON Ignition 2.0 and the Branch in HON Ignition 2.0 vs. Steelcase Series 1 and Branch vs. Steelcase Series 1.
350 to 400 lb: the Steelcase Leap and Gesture, the Herman Miller Aeron in size C, and the Secretlab Titan Evo XL (395 lb). The Leap and Gesture have seats about 19 to 20 inches wide, so try one if you have broad hips. See Herman Miller Aeron vs. Steelcase Leap.
Over 400 lb: the Steelcase Leap Plus, rated to 500 lb with a 22.75-inch seat. Big and tall chairs from contract brands are worth a look too; check that the maker states a tested capacity, not just a marketing figure.
Cheapest chair rated to 400 lb
Steelcase Series 1
Tested to 400 lb, with adjustable seat depth, 4D arms and Steelcase's lifetime frame warranty.
Best for up to 400 lb
Steelcase Leap
Tested to 400 lb, with height and firmness adjustable lumbar and a 15.75 to 18.75 in. seat.
What to Look for Over 300 lb
- A rating at least 50 lb above your weight, so the chair isn’t working at its limit every day.
- Seat width. A 400 lb rating doesn’t mean a wide seat. Measure across your hips while sitting and add a couple of inches.
- A sturdy base. Bases that broke or bent caused three of the six US office chair recalls since 2022.
- Armrests that move outward. 4D arms that adjust in width give you room between them.
- Seat height that suits you. Chairs for larger people sometimes start higher; see office chair seat height ranges.
- A long warranty that covers the cylinder and mechanism. Herman Miller and Steelcase cover both for 12 years. See office chair warranties.
Is the Weight Limit of a Standard Office Chair 250 lb?
Many inexpensive chairs are rated for 250 lb, such as the UPLIFT Pursuit, and many more for 275 to 300 lb. The BIFMA X5.1 standard most of them cite is based on a 275 lb user. If a chair has no stated rating, assume it’s around 250 lb.
For more picks, see our guide to the best office chairs and the office chair Black Friday sales.
Office Chair Weight Limits FAQ
What is the weight limit of a standard office chair?
Most office chairs are rated for 250 to 300 lb. The ANSI/BIFMA X5.1 standard most chairs are tested to is based on a 275 lb user.
What office chairs hold 400 lb?
The Steelcase Leap, Gesture, Series 1, Series 2 and Amia are tested to 400 lb, as is the Herman Miller Aeron in size C. The Steelcase Leap Plus is rated to 500 lb.
What is the weight limit of the Herman Miller Aeron?
300 lb for size A, 350 lb for size B and 400 lb for size C. The older Aeron Classic was rated to 300 lb in every size.
What is the weight limit of the Steelcase Leap?
Steelcase tests the Leap to 400 lb. The Leap Plus is rated to 500 lb and has a wider 22.75-inch seat.
What happens if you exceed an office chair’s weight limit?
Parts such as the gas cylinder, tilt mechanism and base wear faster, the chair is more likely to fail, and the maker can refuse a warranty claim.
What is the BIFMA weight rating?
ANSI/BIFMA X5.1, the general office chair standard, is based on a 275 lb user. BIFMA X5.11, the large-occupant standard, is based on a 400 lb user and requires a seat at least 22 inches wide.
