How to Measure for Custom Cabinets: A Step-by-Step Guide

Getting custom cabinets made? Then accurate measurements are key. Whether you’re renovating your kitchen, bathroom, or laundry room, taking the time to measure your space properly can save you from costly mistakes and ensure a perfect fit.

Here’s a simple, step-by-step guide to help you measure like a pro — even if you’re doing it yourself for the first time.

Step 1: Gather the Right Tools

Before you start measuring, make sure you have:

  • A tape measure (preferably metal for accuracy)

  • A notepad or graph paper

  • A pencil or pen

  • A level (optional but helpful)

  • A camera or smartphone (to take reference photos)

Step 2: Measure the Wall Space

Start by measuring the total width and height of each wall where cabinets will go.

  • Measure from wall to wall, not trim to trim.

  • Note the ceiling height — this is important for tall cabinets or ceiling-hugging designs.

  • Take measurements in multiple spots to check for variations.

Tip: Walls and floors are rarely perfectly straight, so always double-check.

Step 3: Mark Doors, Windows, and Openings

Record the location and size of all doors, windows, and any other openings (like vents or pass-throughs).

For each, measure:

  • Width and height

  • Distance from the floor to the bottom of the window or top of the door

  • Distance from the edge of the wall to the edge of the opening

This ensures your cabinets won’t block or overlap anything they shouldn’t.

Step 4: Measure Fixed Elements

Next, account for any immovable features, including:

  • Appliances (fridge, stove, dishwasher)

  • Electrical outlets and switches

  • Plumbing fixtures

  • HVAC vents or returns

Note where these are so your cabinet layout won’t interfere.

Step 5: Locate Plumbing and Electrical

If you're planning a kitchen or bathroom, mark where the sink, gas lines, and electrical hookups are.

This will help your cabinet maker plan around them — or incorporate features like false drawers or sink cutouts.

Step 6: Take Vertical Measurements

If you're including upper cabinets, measure:

  • From the floor to the ceiling

  • From the floor to the bottom of any windows

  • From the countertop to the bottom of any existing wall cabinets (if replacing)

This helps determine how much vertical space you have to work with.

Step 7: Sketch It Out

Now, draw a basic floor plan of your space — it doesn’t need to be pretty. Just make sure you:

  • Label each wall (A, B, C, etc.)

  • Mark all your measurements clearly

  • Include locations for doors, windows, appliances, and utilities

If you're working with a cabinet designer, this sketch will help them bring your vision to life accurately.

Final Thoughts

Measuring for custom cabinets isn’t hard — but it does require careful attention to detail. A little time spent measuring properly upfront can save you a lot of headaches later.

And if you’re unsure about anything, don’t hesitate to ask your cabinet maker for help or schedule a professional measurement.

With the right measurements, your custom cabinets will fit perfectly, function beautifully, and last for years.

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