Kitchen and bathroom cabinets follow standard dimensions for base, wall, and tall units. This guide covers cabinet widths from 9 to 48 inches, standard heights, and depths for planning kitchen and bathroom layouts.
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Standard Base Cabinet Dimensions
Base cabinets sit on the floor and support countertops. Standard height is 34.5 inches without countertop, 36 inches with standard countertop.
Wall cabinets mount above countertops. Standard height varies from 30 to 42 inches, with 12 inch depth being most common.
Cabinet Size
Dimensions (W x D x H in)
Above Counter Height
Best Use
12 inch Wall - 30 inch
12 x 12 x 30 / 30 x 30 x 76 cm
Installed at 54 in
Small kitchens, limited space
18 inch Wall - 30 inch
18 x 12 x 30 / 46 x 30 x 76 cm
Installed at 54 in
Above refrigerator, short runs
24 inch Wall - 36 inch
24 x 12 x 36 / 61 x 30 x 91 cm
Installed at 54 in
Standard height, common size
30 inch Wall - 36 inch
30 x 12 x 36 / 76 x 30 x 91 cm
Installed at 54 in
Above cooktop, standard runs
36 inch Wall - 42 inch
36 x 12 x 42 / 91 x 30 x 107 cm
Installed at 54 in
9 foot ceilings, maximum storage
24 inch Wall - 15 inch
24 x 12 x 15 / 61 x 30 x 38 cm
Over windows
Short wall cabinets above windows
Tall Cabinet and Pantry Dimensions
Tall cabinets provide floor-to-ceiling storage for pantries, broom closets, and utility storage.
Cabinet Type
Dimensions (W x D x H in)
Features
18 inch Tall Pantry
18 x 24 x 84 / 46 x 61 x 213 cm
Narrow pantry, pull-out shelves
24 inch Tall Pantry
24 x 24 x 84 / 61 x 61 x 213 cm
Standard pantry, adjustable shelves
30 inch Tall Pantry
30 x 24 x 84 / 76 x 61 x 213 cm
Large pantry, multiple shelves
36 inch Tall Pantry
36 x 24 x 84 / 91 x 61 x 213 cm
Extra large storage, double doors
Tall Utility Cabinet
18 x 24 x 90 / 46 x 61 x 229 cm
Broom closet, cleaning supplies
Oven Cabinet
30 x 24 x 84 / 76 x 61 x 213 cm
Built-in oven, microwave combination
Visual Size Comparison
Cabinet type comparison showing base, wall, and tall cabinet configurations.
Cabinet Size Calculator
Calculate cabinet needs for your kitchen or bathroom layout.
How to size cabinets for your space
Measure clearance, not just the room
Cabinet sizing depends on use. Base cabinets: 34.5″ tall × 24″ deep, widths in 3″ increments. Wall cabinets: 12″ deep, 30/36/42″ tall, hung 18″ above the counter. Tall pantry: 84″ or 96″ tall × 24″ deep. Allow door-swing clearance and verify ceiling height for tall units.
Walkways and door swing
Plan at least 30″ for primary walking paths and 24″ behind seating that backs up to a wall (e.g., dining chairs that need to slide out). Closet, oven, and refrigerator doors all need full swing clearance — a piece that fits the floor space but blocks a door is the wrong piece.
Delivery path before you order
Measure the narrowest point in the delivery path: front door, hallway turn, stairwell, elevator. A sofa that fits the room can still be impossible to deliver. The diagonal of a doorway is what matters, not the doorway width — tilting helps but not always enough.
Common mistakes
Choosing a piece that fills the room dimensions exactly — rooms need negative space to feel comfortable.
Ignoring the height of nearby fixtures (windowsills, light switches, baseboards) that limit where the piece can sit flush.
Forgetting that rugs reduce usable clearance by 1–2″ on each side.