Furniture dimensions

Tables and desks
WhatInchesMillimetres
Dining table28–30 in, most often 29 in711–762 mm, most often 737 mm
Desk or writing table28–30 in711–762 mm
Chairs and stools
WhatInchesMillimetres
Dining chair seat16–19 in, most often 18 in406–483 mm, most often 457 mm
Seat to tabletop11–13 in279–330 mm
Counter stool seat (36 in counter)24–27 in610–686 mm
Bar stool seat (42 in bar)28–33 in, most often 30 in711–838 mm, most often 762 mm
Counters and bars
WhatInchesMillimetres
Kitchen counter (with the countertop)35–36 in, most often 36 in889–914 mm, most often 914 mm
Bar top or bar-height table40–45 in, most often 42 in1016–1143 mm, most often 1067 mm
Bookshelves
WhatInchesMillimetres
Shelf depth for books7–12 in178–305 mm
Kitchen and bath cabinets
WhatInchesMillimetres
Base cabinet height34 1/2 in876 mm
Base cabinet depth24 in610 mm
Wall cabinet depth12 in305 mm
Wall cabinet height30, 36 or 42 in762, 914 or 1067 mm
Countertop to wall cabinet18 in457 mm
Tall (pantry, oven) cabinet height84, 90 or 96 in2134, 2286 or 2438 mm
Bathroom vanity height30 1/2–34 1/2 in775–876 mm
Bathroom vanity depth18–21 in, most often 21 in457–533 mm, most often 533 mm
Knee space at kitchen seating (NKBA)
WhatInchesMillimetres
At a 30 in table or counter18 in deep × 24 in wide457 mm deep × 610 mm wide
At a 36 in counter15 in deep × 24 in wide381 mm deep × 610 mm wide
At a 42 in counter12 in deep × 24 in wide305 mm deep × 610 mm wide
Accessible heights (ADA)
WhatInchesMillimetres
Dining and work surfaces (902.3)28–34 in711–864 mm
Knee clearance under a surface (306.3)at least 27 in high, 30 in wideat least 686 mm high, 762 mm wide
Sales or service counter (904.4)at most 36 inat most 914 mm
Reach range for shelves and controls (308)15–48 in above the floor381–1219 mm above the floor