Itoki ACT2 vs Humanscale Liberty
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
Differences at a glance
Sources
- ITOKI Product Catalog: Act2 KJ-457JE-GNB4 ↗Checked Sep 29, 2026
- Liberty Task Chair with Mesh Backrest – Humanscale Shop (US) ↗Checked Sep 26, 2026
- ITOKI Product Catalog: Act2 functions and features ↗Checked Sep 29, 2026
- Liberty brochure (PDF, Humanscale, undated) ↗Checked Sep 26, 2026
- Liberty Task Chair configurator (humanscale.com, US region) ↗Checked Sep 26, 2026
- ITOKI quality warranty ↗Checked Sep 29, 2026
- ITOKI (Japan) (price) ↗Checked Sep 25, 2026
Itoki ACT2Humanscale Liberty
- Price
- ¥132,240$1,613 – $2,326
- Seat height
- 450–565 mm (17.7-22.2 in)16.6–20.9 in (42.2–53.1 cm)
- Recline
- 20°Self-Adjusting Recline: no tension springs, no recline locks
- Arms
- Adjustable arms (4D link arms): height, depth, rotation angleOptions: Fixed Duron Arms, Adjustable Duron Arms, Advanced Duron Arms, Armless, Fixed Duron Gel Arms
- Lumbar support
- Pelvis & lumbar support: 60 mm, 7 stepsSelf-adjusting lumbar support; no external lumbar devices
- Warranty
- Structure 3 years (mechanisms and moving parts 2 years, exterior and surface finish 1 year)15 Years; Fabric/Cushions/Arm Pads/Casters: 5 Years
What users mention
From 6 Itoki ACT2 and 7 Humanscale Liberty user reviews, most mentioned first. Green is liked, orange is a caution.
Design
Itoki ACT28 mentionsHumanscale Liberty6 mentionsComfort
Itoki ACT24 mentionsHumanscale Liberty9 mentionsSeat
Itoki ACT25 mentionsHumanscale Liberty6 mentionsBack support
Itoki ACT26 mentionsHumanscale Liberty4 mentionsAdjustability
Itoki ACT25 mentionsHumanscale Liberty4 mentionsBuild quality
Itoki ACT24 mentionsHumanscale Liberty3 mentions
Questions
What do owners mention most?
Design for the Itoki ACT2, and comfort for the Humanscale Liberty, based on review summaries.
Swap in a similar chair
Compare Itoki ACT2 with
Compare Humanscale Liberty with
More comparisons
- Itoki ACT2 vs Herman Miller Aeron The Itoki ACT2 encourages active sitting, while the Herman Miller Aeron offers iconic mesh ventilation.
- Itoki ACT2 vs Steelcase Gesture The Japanese ACT2 and American Gesture differ sharply on durability reports and value.
- Humanscale Liberty vs Herman Miller Aeron Load capacity: 400 lb on Humanscale Liberty; 300 / 350 / 400 lb on Herman Miller Aeron.
- Humanscale Liberty vs Steelcase Gesture Humanscale Liberty lists at $1,613 – $2,326; Steelcase Gesture at $1,599 – $2,560 (official stores).
- Humanscale Liberty vs Steelcase Leap V2 Humanscale Liberty lists at $1,613 – $2,326; Steelcase Leap V2 at $1,499 – $2,667 (official stores).

