Use these cabinet dimensions as planning references, not fixed rules. A typical base cabinet box is 34 1/2 inches high and 24 inches deep, while wall cabinets commonly measure 12 inches deep. Cabinet sizes vary by manufacturer, door style, and specialty use.
A standard cabinet width usually increases in 3-inch increments. Always separate the cabinet box from the installed projection: doors, handles, countertop overhangs, fillers, and panels can extend beyond the box.
Cabinet Dimensions: Base Box, Toe Kick, and Countertop
Base cabinets sit on the floor and support the countertop. Common reference dimensions are:
- Box height: 34 1/2 inches, excluding the countertop.
- Box depth: 24 inches from the back to the front of the cabinet box.
- Toe-kick height: 4 to 4 1/2 inches.
- Toe-kick recess: 3 to 3 1/2 inches behind the cabinet front.
- Finished counter height: about 36 inches, including a typical 1 1/2-inch countertop.
- Countertop depth: commonly 25 1/2 inches, allowing a front overhang.
The cabinet box depth does not include the door or drawer front. A closed base cabinet may project about 24 3/4 to 25 inches before its hardware, depending on construction. A countertop can project farther, especially at a seating area.
Measure base height from the finished floor to the top of the countertop. Measure box depth from the wall or cabinet back to the box front, then record doors, handles, and counter overhangs separately.
Wall and Tall Cabinet Sizes
Wall cabinet dimensions depend on ceiling height, countertop clearance, and the required storage. Typical wall cabinet sizes include:
- Depth: 12 inches is common; 15 inches is used for larger storage or over-refrigerator cabinets.
- Height: 12, 15, 18, 24, 30, 36, and 42 inches are common increments.
- Width: often begins at 9 inches and increases by 3 inches, with wider units for dishes, range hoods, or shared storage.
Leave about 18 inches between the countertop and the bottom of a wall cabinet in a typical kitchen. The exact clearance may change for a range hood, window, tall user, or appliance manufacturer requirement. A wall cabinet’s listed depth normally describes the box, not the door or handle.
Tall cabinets commonly measure 84, 90, or 96 inches high and 12 to 24 inches deep. Pantry units are often 18 or 24 inches deep. A utility or oven cabinet may use a deeper box to accommodate the appliance, ventilation, and service connections.
Standard Cabinet Width Increments
Most cabinet lines use 3-inch width increments. Common widths include 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, в? inches? Need typo. Let’s correct. 39, 42, 45, and 48 inches. Maybe no weird.
Widths are nominal box dimensions. A “30-inch cabinet” generally has a 30-inch-wide box, but a framed cabinet may have a smaller opening. Door overlay also changes the visible face without changing the listed cabinet width.
- Sink cabinets: commonly 30, 33, or 36 inches wide, depending on sink size and plumbing.
- Dishwasher openings: typically 24 inches wide, with a separate cabinet run beside the appliance.
- Range cabinets: often 30 or 36 inches wide, matching the appliance.
- Corner cabinets: use special diagonal, blind, or square units and cannot be sized like straight cabinets.
Doors, Hardware, Fillers, Panels, and Interior Space
Doors and drawer fronts add visible thickness and projection. Handles can extend another 1 to 2 inches or more, so check the swing path near walls, appliances, and walkways. A full-overlay door may cover much of the face frame; an inset door sits within it.
Allow fillers where a cabinet meets a wall, corner, or appliance. Typical fillers are 1 1/2 to 3 inches wide, but uneven walls may require more. End panels can add thickness beyond the cabinet box, while decorative legs, light rails, crown molding, and other trim can change the finished footprint.
Internal usable size is smaller than the outside cabinet size. Subtract the side panels, back, shelves, drawer hardware, and door or face-frame obstruction. For example, a 30-inch-wide sink base may provide roughly 27 to 28 inches of clear interior width, depending on its construction. Use the manufacturer’s interior opening when checking bins, pullouts, and appliances.
Apply Cabinet Sizes to a Cabinet Run
Use one consistent measurement reference before adding units. Measure the finished wall from corner to corner, then note obstructions, openings, plumbing, electrical points, and appliance locations. Keep these dimensions separate:
- Nominal box sum: the total of the listed cabinet widths.
- Finished run: box widths plus fillers, panels, spacers, and corner requirements.
- Installed projection: the deepest point, including doors, hardware, countertop, and trim.
For a straight run, use this cabinet-sum check: available wall length = cabinet widths + fillers + panels + required clearances. For example, a 96-inch wall could use 30 inches for a sink cabinet, 24 inches for a dishwasher opening, and 36 inches for a drawer cabinet, leaving 6 inches for fillers or end panels.
At a corner, do not count the same wall space twice. Record the corner cabinet’s full footprint on both walls, then add the adjoining cabinet widths. Confirm door swings and drawer clearance before finalizing the run. Around a window or doorway, measure the remaining wall segments independently and reserve filler space where doors need to open.
Finally, verify the appliance specifications, countertop overhang, wall-cabinet clearance, and finished end-panel thickness against the actual site measurements. This prevents a correct cabinet-box sum from becoming an incorrect installed layout.