X-Chair X3 vs Knoll Life Chair
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
$968
lower starting price for X-Chair X3 than Knoll Life Chair at the brand stores
Differences at a glance
Sources
- X3 A.T.R. Office Chair | X-Chair Official Site ↗Checked Sep 29, 2026
- Life Ergonomic Dimensions (Knoll, MillerKnoll library PDF linked from millerknoll.com Life Chair page) ↗Checked Sep 29, 2026
- X-Chair - Warranty & Damages ↗Checked Sep 29, 2026
- Life Work Chair Product Detail (Knoll cut sheet, 2020) ↗Checked Sep 29, 2026
- Knoll Office Seating Price List (April 2026) (price) ↗Checked Sep 29, 2026
X-Chair X3Knoll Life Chair
- Price
- $979From $1,947
- Seat height
- 17.69–22 in16.5–21.75 in (42-55 cm); 17" – 22.25"; 17.25–22.5 in (44-57 cm); 15.5" – 19.25"
- Seat depth
- 16.75–19.25 in15–19 in (38-48 cm)
- Recline
- SciFloat Infinite Recline + Tilt Lock and Tension allows you to recline and lock into position or increase tension in your recline motion for more fluid movement.Angle Between Seat and Back 95° - 119°; Tilt Range of Back 24°
- Arms
- 4-Dimensional armrests come standard (up, down, side-to-side, front-to-back); option to upgrade to FS 360 rotational armrests; Armrest Height 5.875in - 8.875inArms available in fixed height, height-adjustable or high performance; high performance arms adjust 2.5" in armpad width (1.25" per side) and 3" armpad fore/aft movement; Arm Height from Floor 23.25" - 32.75" (height adjustable / high performance); 26.24" – 31.25" (fixed arm)
- Headrest
- Optional add-on (standard configuration: No headrest; Headrest +$115)Optional headrest measures 9"W x 6" - 9"H
- Lumbar support
- Dynamic Variable Lumbar (DVL)® Support; height adjustable backrest raises the DVL®Lumbar Support (Fixed) 7.5"; optional height adjustable lumbar (Exceeds 5.5" - 9.8"), 11.5" x 5.5"
- Warranty
- 5 years (all parts and materials); 15 years (non-moving metal components, chair frame)Structural components: 12 Years; Upholstery, textiles, leathers, finishes: 3 Years
Questions
Which is cheaper, the X-Chair X3 or the Knoll Life Chair?
The X-Chair X3 is cheaper to start: $979 versus $1,947 for the Knoll Life Chair at the brand stores (Sep 2026).
Which has a headrest?
Both: the X-Chair X3 as an option and the Knoll Life Chair as an option.
What do owners mention most?
Comfort for the X-Chair X3, and design for the Knoll Life Chair, based on review summaries.
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More comparisons
- X-Chair X3 vs Herman Miller Aeron Headrest: Optional add-on on X-Chair X3; None offered by Herman Miller on Herman Miller Aeron.
- X-Chair X3 vs X-Chair X4 X-Chair X3 lists at $979; X-Chair X4 at $1,199 – $1,249 (official stores).
- Knoll Life Chair vs Herman Miller Aeron Arms: Arm Height from Floor 23.25" - 32.75" on Knoll Life Chair; Arm height 7.5–11.5 in on Herman Miller Aeron.