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Installation7 min readFebruary 2026

How to Measure Your Kitchen for New Cabinets: A Complete Guide

Accurate measurements are the foundation of a successful kitchen remodel. Whether you are ordering stock, semi-custom, or custom cabinets, getting the numbers right prevents costly mistakes, delays, and frustration. This guide walks you through every step.

Tools You Will Need

  • A 25-foot steel tape measure — retractable models with a magnetic hook are easiest to use solo.
  • Pencil, notepad, and graph paper (or a tablet with a drawing app) for sketching your floor plan.
  • A 4-foot level or laser level to check wall plumb and floor level.
  • A small carpenter's square for checking corner angles.
  • Painter's tape for marking reference points on walls and floors.
  • Smartphone camera to document every wall, corner, and obstruction.
  • Optional: A laser distance measurer for fast, precise wall-to-wall and floor-to-ceiling measurements.

Step 1: Sketch Your Floor Plan

  1. 1Draw the basic outline of your kitchen from a bird's-eye view. It does not need to be to scale — focus on capturing every wall, alcove, and angle.
  2. 2Mark all structural features: doors, windows (including trim), electrical outlets, light switches, gas lines, water supply lines, drain pipes, hood vents, and HVAC registers.
  3. 3Label major areas with letters (A, B, C, etc.) for easy reference when recording measurements.
  4. 4Use a simple key or legend to identify different features: ● = outlet, ✕ = switch, ◆ = vent, etc.
  5. 5Take wide-angle photos of every wall from multiple angles. These are invaluable for verifying details later.

Step 2: Measure Walls Horizontally

  1. 1Start at one corner and work clockwise around the room. Measure each full wall length at counter height (36 inches from the floor).
  2. 2Measure each wall at three heights: near the floor, at counter height, and near the ceiling. Walls are rarely perfectly straight — record all three numbers.
  3. 3Measure window and door openings from outside edge to outside edge of the trim. Note the trim width separately.
  4. 4Record the distance from each corner to the nearest window, door, or obstruction.
  5. 5Double-check every measurement. Professional cabinet designers measure everything twice — errors as small as 1/4 inch can cause problems.

Step 3: Measure Vertically

  1. 1Measure floor-to-ceiling height in at least three spots along each wall. Ceiling heights can vary, especially in older homes.
  2. 2Record windowsill height from the floor, window opening height, and distance from window top to ceiling.
  3. 3Note any soffits, bulkheads, or dropped ceilings — measure their depth (how far they protrude from the wall) and their height from the ceiling.
  4. 4Standard upper cabinet bottom sits 54 inches from the floor (18 inches above a 36-inch countertop). Verify you have clearance.
  5. 5If extending cabinets to the ceiling, measure exact ceiling height at the wall — this determines whether you need filler strips or crown molding.

Step 4: Map Appliances and Utilities

  1. 1Measure the width, depth (including handles), and height of every appliance you plan to keep: range, refrigerator, dishwasher, microwave, hood.
  2. 2Mark the center point of each appliance — this usually indicates where plumbing or gas lines emerge from the wall or floor.
  3. 3Record the exact location of plumbing (water supply and drain lines), gas connections, and electrical outlets relative to the nearest corner.
  4. 4Note the location and size of HVAC registers, baseboards, and any radiators or pipes that cannot be moved.
  5. 5If your sink location is changing, confirm that moving drain and supply lines is feasible and within budget before finalizing measurements.

Common Measurement Mistakes to Avoid

  • Measuring only once — always measure twice and record both numbers. Discrepancies reveal walls that are not straight or floors that are not level.
  • Ignoring the backsplash depth — if your backsplash is thick (stone, tile), it pushes cabinets slightly away from the wall. Account for this.
  • Forgetting appliance clearances — refrigerators need air circulation gaps, dishwashers need exact cutout widths, and ovens need clearance from combustible surfaces.
  • Assuming walls are square — use a carpenter's square in every corner. Out-of-square corners require filler strips or custom scribe pieces.
  • Not accounting for flooring changes — if you are adding new flooring, its thickness affects the finished counter height and toe kick dimensions.
  • Skipping the ceiling check — if one spot is 96 inches and another is 95.5 inches, 42-inch tall cabinets may not fit uniformly.

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