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Humanscale Diffrient World Chair

  • Humanscale Diffrient World Chair left green
  • Humanscale Diffrient World Chair left blue
  • Humanscale Diffrient World Chair side view
  • Humanscale Diffrient World Chair front view
35.00 LBS
Calculated at checkout

Product Description

The Humanscale Diffrient World Chair is a leading ergonomic task chair from one of the most trusted names in the ergonomic industry. The Diffrient World is named after the chair’s designer, Niels Diffrient - a renowned expert and designer of ergonomic task chair seating.


Design Story

If every chair was made the way the World Chair was, we would cut in half all the material used for task chairs."

Niels Diffrient, Designer

Drawing inspiration from the three dimensional approach tailors take when creating men’s suits, Niels Diffrient wanted to build a minimal mesh task chair with a back that automatically fits the user. He collaborated with textile designer Elizabeth Whelan to create a flexible but strong non-stretch mesh, so the backrest would take on the shape of the sitter. He also wanted World to be minimal but highly functional, so he worked to eliminate tension mechanisms, knobs and adjustment levers. The result is a task chair that is simple but beautiful, supporting each user instantly and changing the way people sit.

Humanscale Diffrient World Chair - Options


  • No Arms - Chair comes without armrests
  • Fixed Duron Arms (+$100.00) - Duron arms have a foam core. Fixed armrests are not adjustable.
  • Fixed Duron Arms with Matching Textile (+$130.00) - Fixed Duron Arms are upholstered to match the fabric of the seat.
  • Height Adjustable Duron Arms (+$170.00) - Height adjustable armrests provide 3” of adjustability.
  • Height Adjustable Duron Arms with Matching Textile (+$200.00) - Height Adjustable Duron Arms are upholstered to match the fabric of the seat.

Frame Color

  • Black
  • Gray
  • White (+$15.00)



Seat Height

  • Standard Cylinder - Seat height ranges from 16.0 inches to 21.0 inches
  • Short Cylinder - Seat height ranges from 15.3 inches to 19.0 inches
  • Tall Cylinder (+$42.00) - Seat height ranges from 17.0 inches to 23.3 inches


  • Carpet Casters - These casters (the wheels on the bottom of your chair) are ideal for carpet use, but can also be used on hard floors.
  • Hard Floor Casters - Ideal for hard floors, but can also be used on carpet. These hard floor casters are slightly softer and have tighter rolling tension (vs. Carpet Casters) to help keep the chair from rolling around too much on hard floors

Backrest Fabric

Choose from a wide variety of backrest fabrics from Humanscale. These high performance fabrics offer unparalleled support and durability.

Seat Fabric - Grade I: Humanscale Collection

Humanscale offers a great selection of fabrics to choose from. Ranging in texture and design, from warm colors to bright, a wide spectrum of fabrics are available in the Humanscale Collection.

Seat Fabric - Grade II: Humanscale Premium (+$40.00 - +$80.00)

These premium Humanscale fabrics offer more variety in textures while maintaining a softer finish with luxurious feel.

Humanscale Diffrient World Chair Specifications

Backrest Height 23.0 inches
Backrest Width 19.0 inches
Backrest Recline 22.0 degrees
Seat Depth 20.0 inches
Seat Depth Adjustment Range 3.5 inches (seat slides dynamically during recline)
Seat Width 21.1 inches
Seat Height (standard cylinder) 16.0 inches - 21.0 inches
Seat Height (short cylinder) 15.3 inches - 19.0 inches
Seat Height (tall cylinder) 17.0 inches - 23.3 inches
Seat Height (highest cylinder) 20.5 inches - 28.5 inches
Base Diameter 24.0 inches
Casters Carpet or hard floor options available
Shipping Time 2 - 3 weeks
Made in USA


Humanscale Diffrient World Chair - Features


Humanscale Diffrient World Chair - Features

  • Counter-balance reclining system automatically adjusts reclining tension according to your body weight. So whether you’re big or small, the reclining tension is just right for you.
  • Non-stretch mesh back and seat is highly breathable and contours to your body.
  • Form-sensing mesh seat increases contact area to reduce pressure points
  • Seat height has 5” adjustment range.
  • Seat depth (distance from back of seat to the backrest) has 3.5” adjustment range.
  • Synchronous armrests (optional) adjust quickly and evenly.
  • 3” standard hard casters


Product Sheet             Instructions for Use      Parts and Repair Manual



What sets the Diffrient World Chair apart from other Humanscale chairs is its simplicity. The entire chair is made up of only eight parts and weighs 25 pounds (compared to 50 pounds - which is average for a high-quality task chair). Because it uses so few materials, it is one of the most environmentally friendly high-performance task chairs ever created.

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Warranty Information

Product Warranty

• Fifteen year warranty on mechanisms
• Five year warranty on fabric/cushions/arm pads

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