Chair fit calculator
Quick answer
For someone 5 ft 10 in a chair should offer roughly a 17.5 in seat height, a 17.1 in usable seat pan depth, armrests about 27.7 in from the floor and a lumbar apex about 8 in above the seat. The seat pan should leave two to three fingers of clearance behind the knee.
These are stature based conventions. Two people of the same height can differ by well over an inch in leg length, which is why the seat depth figure is a starting point and an adjustable seat pan is worth paying for.
Seat height = height x 0.25. Buttock to popliteal length = height x 0.28, minus 2.5 in clearance for pan depth. Armrest = seat + height x 0.145. Lumbar apex = height x 0.115 above the seat.
Chairs across the range, not just the cheap end
Shown across the range this category actually spans, from $99.99 to $1585.00, rather than the cheapest few.
- ErgoSift
ErgoSift M1 Ergonomic Office Chair with 3.1-Inch Adjustable Seat Depth
$99.99 Check pricePrices change often - SIHOO
SIHOO B100 PRO Ergonomic Mesh Office Chair with Footrest
$229.99 Check pricePrices change often - Steelcase
Steelcase Leap Chair Black Base - Hard Floor Casters - Black Fabric V2
$589.00 Check pricePrices change often - LiberNovo
LiberNovo Omni PRO Dynamic Ergonomic Office Chair, Built-in Fan, 45cm
$1,109.00 Check priceSeveral configurations share this listing name. The price shown is the one that differs. Prices change often - Haworth
Haworth Fern Ergonomic Office Chair, Digital Knit, Lumbar, Ember
$1,585.00 Check pricePrices change often
