Kitchen Cabinet Dimensions: Box Sizes vs Installed Fit
Compare common kitchen cabinet sizes, separate box dimensions from installed fit, and prepare a clear cabinet schedule before ordering.
Alexander Novak Updated 14 October 2026 9 min read
Kitchen cabinet dimensions at a glance
Common US kitchen base cabinets are 34.5 inches high before the countertop and 24 inches deep at the box; standard wall cabinets are often 12 inches deep, with height and width varying by cabinet line. These are planning references, not verified dimensions for your order: separate the cabinet box, fronts, countertop, fillers and installation space before sending a drawing to a maker.
This guide is for designers preparing a kitchen brief and cabinetmakers checking what a client actually means by a cabinet's size. A catalog size helps select a unit, but it does not describe every surface that needs to fit the room.
Before the maker releases cutting sizes, choose and document the panel with this guide to plywood faces, cores and finishes for cabinets.
For drawers inside the cabinet, use the undermount drawer slide measurement guide to separate clear opening width from drawer-box width.
Standard kitchen cabinet sizes: a planning table
The following dimensions are illustrative planning references, based on KraftMaid's published cabinet-size guide, not measurements of your kitchen. Its size range is not a universal specification for every manufacturer. Confirm the selected product's dimension sheet before ordering.
| Cabinet or reference | Illustrative height | Illustrative depth | Width and scope notes |
|---|---|---|---|
| Base cabinet | 34.5 in before countertop | 24 in box depth | KraftMaid lists widths from 6 to 48 in in 3 in increments; availability depends on configuration |
| Wall cabinet | Examples: 30, 36 or 42 in | 12 in box depth | Its wall range extends from 12 to 54 in high; special deeper units also exist |
| Tall pantry cabinet | Examples: 84, 90 or 96 in | 12 or 24 in | Its tall range includes widths from 9 to 36 in; verify the chosen SKU |
| Finished worktop | 36 in in the example below | Determined by cabinet and overhang | Not the same as cabinet box dimensions |
For scale comparison, 24 in equals 609.6 mm and 36 in equals 914.4 mm. Those exact conversions do not turn an inch-based cabinet into a nominal metric-system cabinet: order to the supplier's actual dimensions.
KraftMaid explicitly defines its base depth as the cabinet box from the face frame to the back panel, excluding doors and drawers. Another system may use a different reference. Ask what is included rather than copying a depth label without its definition.
Cabinet box dimensions versus installed dimensions
If the cabinet run includes seating, check the finished underside and the occupied space with this bar stool fit checklist before choosing seats. A workshop needs more than one width, depth and height. Name the surfaces each measurement connects.
- Box width: the carcass or cabinet assembly width defined by the supplier. Confirm whether a face frame projects beyond the sides.
- Front projection: the door or drawer front beyond the box, plus the handle beyond the front.
- Finished depth: the distance to the outermost relevant surface, which may be the countertop or a handle.
- Installed height: the agreed finished-floor datum to the worktop top, including the specified base support and countertop assembly.
- Run width: cabinets plus fillers, cover panels and any specified installation allowances.
Do not add a toe-kick height to a catalog base height automatically. A listed height may already include the recessed base, while a separate-leg system may describe only the carcass. Confirm the construction first.
An illustrative height calculation
Suppose the cabinet assembly reaches 34.5 in above the finished floor, and the complete countertop build-up is 1.5 in. The finished worktop is then 34.5 + 1.5 = 36 in high. If the countertop build-up changes, the resulting height changes unless the support design is adjusted.
For an illustrative upper-cabinet elevation, a 36 in worktop plus an 18 in clear gap places the wall cabinet underside at 54 in. A 36 in high wall cabinet then reaches 90 in above the same floor datum. This is a layout example, not a clearance requirement above a cooktop: follow the appliance and hood instructions and applicable local rules there.
An illustrative cabinet-run calculation
A proposed run containing three 30 in cabinets, two 1.5 in fillers and one 0.75 in exposed-end panel totals 93.75 in:
30 + 30 + 30 + 1.5 + 1.5 + 0.75 = 93.75 in.
Every number here is illustrative. It is not a recommendation for filler size, nor does it include an unspecified fitting allowance. Measure the room, confirm wall irregularities and door clearances, and let the designer or installer determine the actual fillers before releasing the order.
The same outside-versus-clear-space distinction applies to open storage: our bookshelf measurement guide shows how side panels and an inset back change usable space.
Before releasing a door schedule, record the hardware references and check hinge center positions and cup setbacks against shelves and other fittings.
How to turn room measurements into a cabinet brief
1. Record the room and its reference level
Draw a plan and label each wall, opening, corner and service location. Measure wall lengths at more than one height, and record ceiling height and floor variation where the run will sit. Note whether flooring is installed or still proposed. Mark direct measurements as measured and proposed changes as user-supplied requirements.
2. Identify the exact appliance models
Attach installation instructions for the actual refrigerator, dishwasher, oven, cooktop and hood. Record required openings, ventilation spaces and service access from those documents. A nominal appliance width is not its required cutout, and a photograph cannot confirm either one.
3. Choose the cabinet system before drawing details
Record cabinet codes, box sizes, front style, end panels and base construction. Confirm which depths exclude doors and which heights include feet or a plinth. A custom cabinetmaker also needs material thickness and construction details, not just the outer envelope.
4. Draw three coordinated views
Use a plan for depths, corners and openings; a front elevation for widths and heights; and a section for countertop build-up, front projection and the base. Carry the same cabinet IDs across the views. Keep handle and door-opening checks visible rather than hiding them in a total depth.
5. Issue an open-items list
Highlight missing dimensions and unresolved appliance or hardware decisions. Have the responsible designer, maker and installer agree the final measurements and fitting allowances before fabrication. A neat drawing with an unconfirmed dimension is still an unconfirmed drawing.
Common mistakes that change the order
Treating a size range as stock availability. A manufacturer may offer many widths, but not every width in every drawer, sink or corner configuration. Check the actual cabinet code.
Using wall cabinet depth for a base unit. Both may appear in the same catalog table. Label the cabinet type and box-depth definition on every line of the brief.
Assuming a tall cabinet can be lifted into place. Finished height alone does not establish installation clearance. Confirm the delivery path and assembly or erection method with the installer.
Drawing a sink from its outside width. Obtain the sink template and the required cabinet size, and check mounting hardware, plumbing and nearby drawers. Do the same for cooktop cutouts.
Reading dimensions from the cover image. The illustration below separates the cabinet and countertop visually; it is not to scale and supplies no construction dimensions.
Where CarpDraw fits, and where it does not
The manual work is establishing trustworthy dimensions and keeping them consistent across the plan, elevation and section. No photo-based concept can settle hidden box construction, fitting allowances or appliance clearances by itself.
CarpDraw's photo-to-drawing workspace requires sign-in. Its interface provides a source-photo workflow and settings, but the live drawing service currently uses a placeholder provider. Do not rely on it to produce a validated cabinet drawing or infer manufacturing accuracy from the interface. The cover here is a separately generated editorial illustration, not a CarpDraw result.
You can prepare the same measured reference pack for a manual drawing process now: room survey, cabinet schedule, appliance documents, photos and open questions. A maker must still review the finished construction documents before anything is cut.
Before you release the cabinet schedule
Write each cabinet's width, depth and height with units and explicit reference surfaces. Keep box dimensions separate from countertop, front and installation dimensions. Resolve the appliance requirements and filler details with the selected cabinet system, then approve the coordinated drawings rather than a generic standard-size chart.
For the recessed base, check finished toe kick height and depth after accounting for the floor and visible panel.
Frequently asked questions
Are all kitchen cabinets 24 inches deep?
No. A 24 in box depth is a common base-cabinet reference. Wall units are often 12 in deep, while shallow bases, deeper appliance cabinets and custom units vary. Verify both the size and whether the listed depth includes fronts.
What is the standard size of a kitchen cabinet in inches?
There is no single size covering base, wall and tall cabinets. A common base reference is 34.5 in high before the countertop and 24 in deep at the box, with width chosen for the cabinet's function. Use the manufacturer's sheet for the particular cabinet you plan to order.
Are 36 inch cabinets standard?
A 36 in width is a common option, and 36 in is also an available wall-cabinet height in many ranges. Neither phrase means the same thing as a finished worktop height of 36 in. Always name the axis and cabinet type.
Should kitchen cabinets go to a 9 foot ceiling?
Not necessarily. A 9 ft ceiling is 108 in high. Whether cabinetry reaches it depends on upper-cabinet heights, stacked units, trim, ceiling variation and access needs. Draw the complete elevation and confirm the installation details instead of assuming one wall cabinet fills the space.
Does a cabinet's listed depth include the countertop?
Do not assume it does. The cabinet box, fronts, handles and countertop have separate reference surfaces. Ask the supplier what the listed measurement includes and dimension the required finished projection separately.
Co-founder, architect
Alexander is a co-founder of CarpDraw and a practising architect. He prepares technical drawings for his own projects, so he runs into the same problem every week: turning a furniture idea or a reference photo into drawings and specifications a maker can actually build from. CarpDraw is the tool he wanted for that work, and he writes here about drawings, dimensions and getting furniture from idea to build.
