How to Measure a Small Garage for Storage Cabinets

Choosing garage storage cabinets is easier when you know exactly how much space you have. A cabinet that looks compact online may block a car door, interfere with the garage door tracks, or leave too little room to walk comfortably.

This step-by-step guide shows you how to measure your garage, estimate available storage space, and compare cabinet dimensions before buying.

Step 1: Measure Your Garage Dimensions

Start by measuring the interior of your garage, not just the dimensions listed in your home’s floor plan.

Record these measurements in inches:

• Interior width, from wall to wall.
• Interior depth, from the garage door to the back wall.
• Ceiling height at the planned storage location.
• Garage door opening width and height.
• Distance between any permanent obstacles.

Measure the width at multiple points. Pillars, wall-mounted equipment, and other fixtures may reduce usable space.

A simple sketch with measurements can help you identify where cabinets, shelves, or a workbench might fit.

Step 2: Measure Your Parked Vehicle

Your vehicle takes up more usable space than its published width and length might suggest.

Measure or confirm:

• Vehicle width, including mirrors where relevant.
• Vehicle length.
• Actual parking position.
• Clearance needed to open the doors.
• Space required to enter and exit the vehicle.

For a more accurate assessment, park the vehicle where it normally sits and measure the remaining distance to each garage wall.

Step 3: Calculate the Available Storage Space

For a basic side-by-side layout, estimate the remaining width using this formula:

Available storage depth = Garage width − Vehicle width − Required clearances

For example, suppose your garage is 144 inches wide, your vehicle occupies 82 inches, and you want to reserve 30 inches for access.

144 − 82 − 30 = 32 inches.

This leaves a theoretical 32-inch-wide strip for storage on the opposite side, assuming no other obstacles.

That does not mean a 32-inch-deep cabinet will necessarily work. Door swings, the position of the vehicle, walking routes, and other equipment must also be checked.

When possible, choose cabinets that leave extra flexibility rather than using every available inch.

Step 4: Check Doors and Obstacles

Before selecting a cabinet, look for objects that could interfere with its installation or use.

Common examples include:

• Electrical panels and outlets.
• Garage door tracks and mechanisms.
• Water heaters and plumbing.
• Existing shelving and wall fixtures.
• Side doors, windows, and access routes.

A cabinet may physically fit against a wall but still be impractical if its doors cannot open fully.

Do not block required access to electrical equipment, exits, or safety systems.

Step 5: Compare Storage Cabinet Dimensions

When shopping for garage cabinets, check three basic specifications.

Cabinet Width

Cabinet width determines how much wall space the unit occupies. Measure between obstacles instead of relying on the total wall length.

Cabinet Depth

Depth is particularly important in a one-car garage. Deep cabinets provide more storage capacity but reduce space around the parked vehicle.

Cabinet Height

Tall cabinets can take advantage of vertical space, but you must account for the ceiling, overhead equipment, and any installation clearance required by the manufacturer.

Also check the cabinet’s door-opening requirements and load capacity.

Step 6: Test the Layout Before Buying

Use masking tape to mark the cabinet footprint on the garage floor.

Then park your vehicle and test the layout.

Can you comfortably open the car doors? Can you walk through the garage? Will drawers and cabinet doors open without hitting anything?

For wall-mounted cabinets, confirm that the wall structure and mounting hardware are suitable for the intended loads. Follow the manufacturer’s installation instructions.

Testing the footprint before purchasing can prevent expensive mistakes.

Common Mistakes to Avoid

Measuring an empty garage only. Always verify the layout with your vehicle parked.

Ignoring cabinet doors. A cabinet’s exterior dimensions do not show how much room it needs when open.

Choosing storage based only on capacity. A larger cabinet is not necessarily better when floor space is limited.

Forgetting access and safety requirements. Keep doors, equipment, and essential access routes unobstructed.

Frequently Asked Questions

How deep should garage storage cabinets be?

There is no single ideal depth. The right choice depends on the space available, the items being stored, and the clearance needed around your vehicle.

Measure first, then compare actual product dimensions.

Are wall-mounted cabinets better for small garages?

Wall-mounted cabinets can preserve floor space, but they require suitable wall construction and secure installation. Freestanding cabinets may be easier to reposition.

Can I fit storage cabinets in a one-car garage?

Often, yes. Narrow cabinets, wall-mounted storage, and compact shelving may work well, depending on the garage layout and vehicle size.

Final Thoughts

The best garage storage system is not necessarily the largest one. It is the one that fits your space, keeps important items accessible, and allows you to use your garage comfortably.

Before buying, measure the garage, check your parked vehicle’s clearance, compare product dimensions, and test the planned layout.

You can also use the Garage Fit Calculator on GarageFit Lab to make an initial estimate of your available storage space.