How To Measure A Cupboard Before Buying Storage Containers

Accurately measuring your cupboard is the essential first step to buying storage containers that fit perfectly and maximize your space. This guide provides a systematic approach to measuring width, depth, and height while accounting for common obstructions like hinges and lips, ensuring you purchase the right containers on the first try.

Fast Answer

Measure the internal width, depth, and height of the usable space, not just the front opening.
Record the narrowest measurement for each dimension after checking at multiple points to account for internal obstructions.

Set-up ready What to have on hand

Step-by-step Guide format

Device-specific Check official settings

Before You Start

A rigid metal tape measure for accurate, straight-line readings.
A notepad and pen, or a digital device, to clearly record all measurements.
A flashlight to illuminate dark corners and see potential obstructions clearly.
A small step stool if you need to safely and comfortably reach high shelves.

Check first: The most common error is measuring only the cupboard's front opening. The true usable space is often smaller due to internal hinges, shelf supports, or the cabinet's construction. Always measure the interior dimensions at several points to find the narrowest, shallowest, and shortest spots.

Step-by-Step Instructions

Step 1: Empty and Prepare the Space

Before taking any measurements, completely empty the cupboard of all contents. This provides a clear, unobstructed view of the entire interior space and prevents items from interfering with your tape measure. Once empty, wipe down all interior surfaces, including the shelves, walls, and floor of the cupboard. This not only cleans the area but also helps you spot any subtle imperfections, like screws, seams, or slight bulges in the cabinetry that you might otherwise miss. The essential practical check is to run your hand along all the interior surfaces—back wall, side walls, and shelf undersides. Feel for any protruding hardware, support brackets, or uneven joints that could reduce the actual usable space. This tactile check matters because it reveals small obstacles that a visual inspection alone might overlook, ensuring you are aware of every potential restriction before you even begin to measure.

Tip: Leave the cupboard door open and use a flashlight, even in a well-lit room, to illuminate the back corners where hardware is often hidden in shadow.

Step 2: Measure the Usable Width

To measure the usable width, extend your metal tape measure horizontally across the inside of the cupboard from the left interior wall to the right interior wall. Make sure the tape is held straight and taut, without any sagging, to get a precise reading. Record this initial measurement. Now, perform the crucial check: take two more width measurements, one in the middle of the shelf's depth and another at the very back. Write down all three numbers. Cupboards are rarely perfectly square, and internal hardware or slight warping can make the space narrower in some areas than in others. You must use the smallest of the three recorded measurements as your maximum container width. This check is fundamentally important because it guarantees that a container will not only fit through the opening but will also slide all the way to the back of the cupboard without getting jammed, allowing for full use of the available space.

Tip: When measuring width, pay close attention to the location of shelf support pegs or brackets, as they are the most common feature that reduces side-to-side space.

Step 3: Determine the Functional Depth

Next, measure the functional depth of the cupboard. Place the end of your tape measure firmly against the interior back wall and extend it forward to the front of the shelf. Do not measure to the outside of the cupboard door or frame. The correct stopping point is just inside any lip or frame that runs along the front edge of the cabinet. For the practical check, with the tape measure still in place, slowly begin to close the cupboard door. Watch to see where the inside of the door or any attached hardware (like a spice rack) would make contact with a potential container. Note the depth measurement just before this point of contact. This check is absolutely critical because it defines the true maximum depth for a container. If a container is too deep, even by a small amount, the cupboard door will not be able to close properly, completely defeating the purpose of organized storage.

Tip: For cabinets with a central vertical stile between two doors, measure the depth on both the left and right sides, as hinge hardware can create different clearance levels.

Step 4: Assess the Vertical Height

To determine the usable vertical height, measure the distance from the top surface of a shelf to the underside of the shelf or structure directly above it. Ensure your tape measure is held perfectly vertical for an accurate reading. If your shelves are adjustable, you may want to measure the height in its current position and consider other potential positions if you plan to rearrange them. The vital check for this step is to measure the height on both the left side and the right side of the shelf. Shelves, especially longer ones, can sag slightly in the middle or may have been installed at a minor, unnoticeable angle. By measuring both sides, you can identify the lowest point of clearance. Always use the smaller of the two height measurements for your purchasing decision. This check matters because it prevents you from buying a container that fits on one side but is too tall for the other, ensuring a level and stable fit.

Tip: If you plan to stack containers, physically stack two of your prospective containers and measure their combined height to ensure they fit within your recorded vertical space.

Step 5: Identify and Measure Obstructions

This step requires careful inspection to identify anything that intrudes into the main rectangular volume of the cupboard. Look for door hinges, shelf support pegs, plumbing pipes, internal braces, or the cabinet door itself when it's closed. For each obstruction, measure how far it extends into the usable space. For example, measure how far a hinge protrudes from the side wall or how far a pipe extends from the back wall. Note both the size of the obstruction and its precise location on your diagram. The practical check is to visualize a perfect box defined by your initial width, depth, and height measurements. Then, mentally (or on your sketch) place each obstruction within that box. This simple visualization helps you understand exactly how the usable space is compromised. This process is crucial because these intrusions are the primary reason why containers that match the main dimensions fail to fit in reality.

Tip: For large, fixed obstructions like a pipe, consider using multiple smaller containers arranged around it rather than trying to find one large container that fits the awkward shape.

Step 6: Document and Finalize Measurements

The final step is to organize and verify all the numbers you have collected. Create a clear, well-labeled record of your findings. It is highly recommended to draw a simple diagram of the cupboard interior, marking the final, usable dimensions (the smallest width, depth, and height) for each shelf. On this diagram, also sketch in any obstructions like hinges or pipes and label their dimensions and locations. This visual reference is much easier to interpret than a simple list of numbers when you are shopping. For your final check, choose one dimension, such as the width of the main shelf, and measure it one last time. Compare this new reading to what you wrote down. This simple re-measurement acts as a verification step to catch any errors made in reading the tape measure or transcribing the number initially. This check provides confidence that your entire set of figures is accurate before you make a purchase.

Tip: Take a clear photo of your finished diagram and notes with your phone. This creates a digital backup and ensures you have the measurements with you when you are shopping.

Quick Reference

Situation	Action	Why it helps
My cupboard door will not close.	Re-measure the depth from the interior back wall to the inner edge of the door frame or hinge mechanism, not to the front edge of the shelf.	This ensures the container does not block the path of the door as it swings shut, accounting for the door's thickness and any mounted hardware.
Containers fit at the front but not the back.	Measure the cupboard's width at the front, middle, and back. Use the smallest of the three measurements as your maximum container width.	Cupboards are often not perfectly square. Internal construction or supports can make the back of the cabinet narrower than the front opening.
A container is too tall for one side of the shelf.	Measure the vertical height from the shelf surface to the underside of the one above it on both the left and right sides. Use the shorter measurement.	Shelves can be installed at a slight angle or may sag over time, resulting in uneven vertical clearance across the width of the shelf.

Common Issues

Forgetting the lip at the front.: Measure the opening height from the shelf floor to the bottom of the lip. If a container is taller than this opening but shorter than the internal height, you will need to tilt it to get it in.
Door-mounted storage clashes with containers.: If you use racks on the inside of your cupboard door, close the door and carefully measure from the back wall to the front-most part of the rack to find your true maximum container depth.
Inaccurate or inconsistent readings.: Always use a rigid metal tape measure. Hold it straight and level, without any kinks or sagging. Read the measurement from directly overhead to avoid parallax error from viewing it at an angle.

Advanced Tips

Create a simple cardboard template matching the base dimensions of a potential container to physically test the fit and maneuverability inside the cupboard.
When planning for stackable containers, remember to account for the extra height of the lid's design, as this can add significant vertical dimension.
For very deep shelves where items get lost, prioritize containers with pull-out handles or models designed as sliding drawers to improve accessibility.

Final Checklist

I have the final usable width, depth, and height for each shelf.
My notes include the size and location of all obstructions.
I have a simple diagram of the cupboard's interior for reference.
I will bring my notes or a photo of them with me when shopping.

FAQ

What's the biggest mistake people make?

The most frequent mistake is measuring only the front opening of the cupboard. The usable space inside is almost always smaller due to door hinges, shelf supports, and how the cabinet is constructed. Relying on the opening's dimensions often leads to buying containers that are too large to fit properly inside.

Should I subtract from my measurements to be safe?

Yes, it is a very good practice. Subtracting a small buffer, about a quarter to a half-inch (or about one centimeter), from your final width and depth measurements provides 'wiggle room.' This makes placing and removing containers much easier and accounts for any minor variations in the containers themselves.

How do I measure a corner or L-shaped cupboard?

For L-shaped cabinets, measure each rectangular section separately as if it were its own cupboard. For blind corner cabinets, measure the depth and width of the accessible portion and the height of the door opening. You will need containers that can be maneuvered through the door and into the hidden space, so measure the diagonal of the door opening as well.