How to Measure Kitchen for Cabinets: A 6-Step Guide
Measuring your kitchen for cabinets takes about an hour and a tape measure. No special tools, no contractor required. Get it right and your cabinet order fits the first time.
Cabinet orders are built to standard sizes, but kitchens are not. A half-inch error can mean a cabinet run that does not fit, a reorder that adds weeks to your timeline, or filler strips that look awkward. This guide walks through exactly what to measure, in what order, and what numbers you need before you order.
Tools You Need
You do not need specialty tools. Most homeowners already have everything on this list. The whole process takes about 45 to 60 minutes.
25-foot tape measure. A shorter tape will not span most kitchen walls in one pull. A soft sewing tape is no good because it sags.
Pencil and paper. Graph paper is ideal but not required. You are making a place to write numbers, not drawing to scale.
Camera or phone. Take a wide photo of each wall after you mark it. Photos catch what sketches miss and help us plan your layout.
Optional: a 2-foot or 4-foot level. Useful for checking whether walls and floors are plumb, but not required for measuring.
Optional: a helper for long walls. One person holds the tape, one person reads it. Faster and more accurate on walls over 10 feet.
Measure in inches, not feet and inches. Mixed units cause conversion errors. Record every number to the nearest 1/8 inch. Cabinets are built to exact sizes and a run that is even 1/2 inch too long will not fit.
Step 1: Sketch Your Layout
Before you measure anything, draw a birds-eye view of your kitchen. You do not need to be an artist and you do not need graph paper. You are making a map to write numbers on.
Draw the shape of the room from above showing every wall. Then mark where everything is: doors and which way they swing, windows, appliances (refrigerator, range, dishwasher, sink), and any soffits or bulkheads above the cabinet zone.
Label Your Walls
Label each wall with a letter, going clockwise: Wall A, Wall B, Wall C, Wall D. This way you can reference them when you write down measurements. Every number goes next to the wall it belongs to.
Every door and which direction it swings
Every window
Sink location (plumbing rough-in)
Range, refrigerator, and dishwasher locations
Any soffits, bulkheads, or dropped ceilings above the cabinets
Any islands or peninsulas
Step 2: Measure Each Wall Corner to Corner
Measure each wall from corner to corner. Hold the tape at counter height, about 36 inches off the floor, where the cabinets actually sit. Do not measure at the floor and do not measure at the ceiling. Walls in older homes bow and lean, and the cabinet run has to fit the tightest point.
Measure at Three Heights
For each wall, take three measurements: at the floor, at counter height (36 inches), and near the ceiling (84 inches). Record all three on your sketch. If they differ, use the smallest number for planning. That is the dimension your cabinet run has to fit inside.
Measure at floor level
Measure at counter height (36 inches)
Measure near the ceiling (84 inches)
Use the smallest of the three for planning
Write every number on your sketch next to the wall it belongs to. Measure everything twice. A two-minute re-check here prevents a costly surprise at install time.
Step 3: Measure Windows and Doors
For every window and door on a cabinet wall, you need four numbers. These determine where your cabinet runs break and whether a wall cabinet clears the window trim.
For Each Window, Record:
Distance from the nearest corner to the left edge of the window (including trim)
Width of the window including trim
Height of the window including trim
Distance from the floor to the bottom of the window (sill height)
For Each Door, Record:
Distance from the nearest corner to the edge of the door casing
Width of the door including casing
Which direction the door swings
Write each number on your sketch next to the window or door it belongs to. If you have a window above the sink, get the sill height right. It determines whether a wall cabinet fits above it.
Step 4: Locate Appliances and Utilities
Appliance placement determines where your cabinet runs start and end. Mark the center of each appliance on your sketch and measure from the nearest corner to that center line.
Mark the Center of Each:
Sink (plumbing rough-in center). Measure from the nearest corner to the center of the sink drain.
Range or cooktop. Standard ranges need a 30-inch opening. Some take 36 inches. Confirm your model.
Refrigerator. Measure width, depth, and height of the opening. Allow at least 1 inch on each side for ventilation.
Dishwasher. Standard opening is 24 inches wide. Mark its position relative to the sink.
Also Mark These Utilities:
Gas line location (distance from nearest corner, height from floor)
Plumbing supply lines and drain
Electrical outlets and switches (distance from corner, height from floor)
HVAC vents and returns
These determine whether a cabinet back needs to be cut and whether a wall cabinet will clear the window trim. Measure to the center of each fixture.
Step 5: Measure Ceiling Height
Measure from the finished floor to the ceiling in at least three spots around the room, including every corner where tall or wall cabinets will go. Older homes routinely vary by an inch or more across a single kitchen.
Record the lowest number. That is the height your tall cabinets and crown molding have to live under. If you are planning cabinets to the ceiling, this number determines what will fit.
If You Have Soffits
If you have soffits (the boxed-in areas above existing upper cabinets), measure their height from the floor, their depth from the wall, and their length. Note whether you plan to keep them or remove them. Soffits change your wall cabinet height options.
An 8-foot ceiling (96 inches) fits 42-inch wall cabinets with an 18-inch gap above the counter. A 9-foot ceiling opens up the option for stacked cabinets. Know your number before you order.
Step 6: Check for Square
Corners are not always 90 degrees. If a corner is off by half an inch or more, your cabinet run will not meet cleanly and your countertop fabricator needs to know. The 3-4-5 test takes two minutes and catches the problem before you order.
How to Do the 3-4-5 Test
Pick a corner where two cabinet runs will meet.
Measure 3 feet out along one wall from the corner and mark it.
Measure 4 feet out along the other wall from the corner and mark it.
Measure the diagonal between your two marks. If it is 5 feet, the corner is square.
If the diagonal is off by more than half an inch, note it on your sketch. Corner cabinets and fillers can be adjusted to compensate.
Do this in every corner where cabinet runs will meet. It takes two minutes per corner and prevents the most common installation problem we see.
Standard Cabinet Sizes Cheat Sheet
Cabinets are built to standard sizes. Knowing these helps you plan your layout and check whether your measurements will work. Widths come in 3-inch increments (9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42).
Standard gap between the countertop and wall cabinets is 18 inches. That places the bottom of wall cabinets 54 inches above the finished floor. Measure and mark this line on every wall that gets upper cabinets.
If your ceiling is 96 inches, 42-inch wall cabinets fit with a small gap for crown molding. If your ceiling is lower, 30-inch or 36-inch wall cabinets are the better choice. Your ceiling height measurement from Step 5 tells you which.
How to Measure Kitchen for Cabinets FAQ
Do I measure with appliances in place or removed?
How accurate do kitchen measurements need to be?
What if my walls are not square or my floor is not level?
Do I need to measure soffits separately?
How long does it take to measure a kitchen for cabinets?
Can I measure my kitchen myself or do I need a pro?
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