Humanscale Liberty vs SIHOO M18

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

Humanscale

Humanscale Liberty

$1,613 – $2,326

SIHOO

SIHOO M18

$289.99 – $299.99

$1,323.01

lower starting price for SIHOO M18 than Humanscale Liberty at the brand stores

Differences at a glance

Humanscale LibertySIHOO M18

Price: $1,613 – $2,326$289.99 – $299.99
Seat height: 16.6–20.9 in (42.2–53.1 cm)44–54 cm
Seat depth: 16.5–18.75 in (41.9–47.6 cm)17.91 in (≈ 45.5 cm)
Load capacity: 400 lb (181.4 kg)330 lb (≈ 150 kg)
Recline: Self-Adjusting Recline: no tension springs, no recline locksMaximum 126° recline angle
Arms: Options: Fixed Duron Arms, Adjustable Duron Arms, Advanced Duron Arms, Armless, Fixed Duron Gel ArmsAdjustable armrests (Up and down)
Lumbar support: Self-adjusting lumbar support; no external lumbar devicesLumbar support adjusts vertically and horizontally
Warranty: 15 Years; Fabric/Cushions/Arm Pads/Casters: 5 Years3 years

From 7 Humanscale Liberty and 5 SIHOO M18 user reviews, most mentioned first. Green is liked, orange is a caution.

Which is cheaper, the Humanscale Liberty or the SIHOO M18?

The SIHOO M18 is cheaper to start: $289.99 versus $1,613 for the Humanscale Liberty at the brand stores (Sep 2026).

Which has a higher weight capacity?

The Humanscale Liberty, rated for 400 lb versus 330 lb for the SIHOO M18.

What do owners mention most?

Comfort for the Humanscale Liberty, and price and value for the SIHOO M18, based on review summaries.