Herman Miller Mirra 2 vs KI Altus

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

Herman Miller

Herman Miller Mirra 2

$1,365 – $1,915

KI Altus

$881 – $1,516

$484

lower starting price for KI Altus than Herman Miller Mirra 2 at the brand stores

Differences at a glance

Herman Miller Mirra 2KI Altus

Price: $1,365 – $1,915$881 – $1,516
Seat height: 16–20.5 in standard; 14.75–19 in low; 16.75–22.25 in extended17–21.75 in (43.2–55.2 cm); 16.25–20.75 in (41.3–52.7 cm)
Seat depth: 16.25 in fixed; 16.25–18 in adjustable17.25–19.75 in (43.8–50.2 cm); 15.5–18 in (39.4–45.7 cm)
Load capacity: 350 lb (159 kg)supports up to 400 pounds
Arms: Options: No Arms, Fixed Arms, Fully Adjustable 4D ArmsAdjustable arms, fixed arms, or armless
Lumbar support: PostureFit Sacral-Support Standard; Adjustable Lumbar-Support OptionalMesh chair: optional adjustable lumbar (height and depth); fabric chair: automatic lumbar support
Warranty: 12-year, 3-shift warranty, with limited exceptionsLifetime

Which is cheaper, the Herman Miller Mirra 2 or the KI Altus?

The KI Altus is cheaper to start: $881 versus $1,365 for the Herman Miller Mirra 2 at the brand stores (Oct 2026).

What do owners mention most?

Comfort for the Herman Miller Mirra 2, and back support for the KI Altus, based on review summaries.