What measurements do I need to order kitchen cabinets?

You need: total wall lengths (at floor and counter height), ceiling height, the position and dimensions of all windows and doors, appliance locations and dimensions, sink drain location, and electrical outlet and vent positions. Measure every dimension twice and record everything on a rough sketch of your kitchen layout.

How accurate do kitchen cabinet measurements need to be?

Measurements should be accurate to within 1/8 inch. Stock cabinets come in 3-inch increments so small errors can be covered with filler strips. Semi-custom and custom cabinets can be made to 1/8" or 1/16" precision. The most critical measurements are ceiling height, window sill height (affects upper cabinet sizing), and appliance rough opening dimensions.

Should I measure kitchen cabinets from the floor or the wall?

Measure wall lengths from corner to corner at counter height (36") AND at floor level. Walls are rarely perfectly plumb — a wall might be 144" at the floor but 143.5" at counter height. Always use the smaller measurement when ordering cabinets, then use filler strips to close any gaps.

How to Measure Your Kitchen for New Cabinets (Step-by-Step)

Measure Right the First Time

Wrong measurements mean wrong cabinets — and returned orders, delays, and extra cost. Before you order a single cabinet, get your kitchen measurements right. This guide walks you through exactly what to measure and how to record it.

What You'll Need

25-foot tape measure (metal, not cloth)
Pencil and graph paper (or a measuring app)
Laser level (optional but helpful)
Someone to help hold the tape

Step 1: Sketch Your Kitchen Layout

Before measuring anything, draw a rough bird's-eye sketch of your kitchen. Mark:

All four walls
The position of windows and doors
Appliance locations (refrigerator, range, dishwasher)
Sink location
Any corners, soffits, or columns

You don't need to be artistic — a rough rectangle with labels is enough. You'll fill in measurements as you go.

Step 2: Measure Each Wall

Measure the total length of each wall from corner to corner. Write the number on your sketch.

Important:

Measure at counter height (36") AND at floor level — walls aren't always perfectly plumb
Note any irregularities (bowing walls, out-of-square corners)
Measure twice for every wall

Step 3: Measure Ceiling Height

Standard ceiling height is 8 feet. Note if your ceilings are higher or lower — this affects your upper cabinet heights and whether you need crown molding or filler strips.

Also note if you have a soffit (the bulkhead above cabinets). Measure:

Height from floor to bottom of soffit
Depth of soffit from wall

If you plan to remove the soffit, note that now — it changes your cabinet height options.

Step 4: Measure All Windows

For each window, measure and record:

Distance from the corner of the wall to the left edge of the window
Width of the window (left edge to right edge)
Height from the floor to the windowsill
Height from the floor to the top of the window

Windows affect where wall (upper) cabinets can go and what sizes you can use.

Step 5: Measure All Doors

For each doorway, measure:

Distance from the corner to the door opening
Width of the opening
Which direction the door swings (affects clearance planning)

Step 6: Mark Appliance Locations

For each appliance, measure and record:

Distance from the wall corner to the left side of the appliance
Width of the appliance
Depth of the appliance

Standard appliance widths:

Refrigerator: 30"–36" wide (measure your actual fridge)
Range/cooktop: 30" or 36"
Dishwasher: 24"
Wall oven: 27" or 30"

Critical: Measure the actual rough opening for built-in appliances — not the appliance itself.

Step 7: Locate Plumbing, Electrical & Vents

Mark on your sketch:

Sink drain location (distance from wall corner)
Electrical outlets (position and height)
Any vent ducts in the floor, wall, or ceiling
Gas line location if applicable

These affect where cabinets can be placed and what modifications might be needed.

Step 8: Check for Square Corners

Kitchens are rarely perfectly square. To check, measure both diagonals of the room. If they're equal, the room is square. If not, you'll need filler pieces or angled cabinets in the corners.

Standard Cabinet Dimensions to Know

Base Cabinets (lower):

Height: 34.5" (countertop brings it to 36")
Depth: 24"
Width: 9" to 48" in 3" increments (standard stock)

Wall Cabinets (upper):

Height: 12", 15", 18", 24", 30", 36", 42"
Depth: 12"
Width: 9" to 48" in 3" increments

Tall/Pantry Cabinets:

Height: 84", 90", 96"
Depth: 12" or 24"
Width: 18" to 36"

Common Measurement Mistakes

Forgetting window heights. Upper cabinets may need to be shorter to clear a window — measure the window height before ordering.

Not accounting for refrigerator depth. Standard refrigerators are 30"–36" deep — much deeper than 24" base cabinets. Allow counter depth space.

Ignoring the dishwasher door swing. A dishwasher door open 90° needs clearance — don't plan a corner cabinet that blocks it.

Measuring only once. Measure every dimension at least twice. Write down both measurements and use the smaller one to be safe.

When to Call a Professional

If your kitchen has:

Out-of-square walls (more than 1/4" off over 10 feet)
Sloped ceilings or cathedral ceilings
Load-bearing walls you're considering removing
Complex angles or non-standard configurations

…call a professional designer before ordering. A $150 design consultation can save thousands in wasted materials.

At Symco Kitchens, our team offers free measurements and layout reviews for Howell, Lakewood, Toms River, and surrounding areas. Schedule a visit or get a free estimate online.