Storage · Sizing
Garage Storage Sizes Explained
By the Nest & Yard editorial teamUpdated 2026-08-094 min read
Our pick: the Amazon Basics 5-Shelf Storage Unit with Height Adjustable Shelves and Levelling Feet, 795kg Max Weight, Black — the best Garage Storage we tested, from £44.99.
Maximising the space in your garage doesn’t have to be a struggle – and choosing the right storage unit can make all the difference. Understanding the various sizes available, and what those measurements actually represent, is key to finding something that fits your needs and the space you have. This guide breaks down the common garage storage sizes currently on Amazon UK, from smaller shelving units like the Amazon Basics 5-Shelf Storage Unit to larger options such as the Keter Store It Out Max 1200L Shed, helping you measure up accurately before you buy.
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#1 Pick
Amazon Basics 5-Shelf Storage Unit with Height Adjustable Shelves and Levelling Feet, 795kg Max Weight, Black- Steel
- 795kg Max Weight, 5-Shelf
£44.99
Pros
- 795kg max weight across the unit for heavy garage items
- Height-adjustable shelves suit boxes of different sizes
- Levelling feet keep it stable on uneven garage floors
Cons
- Steel frame requires flat-pack assembly

Currently unavailable
Pros
- 1200L capacity fits two 240L wheelie bins or bikes and tools
- Piston-assisted lid opens from the top or front
- Fully weatherproof and low maintenance
Cons
- Large footprint needs a flat, level base
- Heavier and pricier than shelving alternatives

#3 Pick
House of Home Heavy Duty Garage Shelving Unit, 5 MDF Shelves, 875kg Max Load, 70 x 30 x 150cm- Metal
- 875kg, 5 Shelves
£21.49
Pros
- Industrial-strength steel frame rated to 875kg total load
- Five MDF shelves suit boxes, tools and tins
- Boltless design assembles in minutes
Cons
- Shelves can flex slightly when fully loaded with heavy tins

#4 Pick
VonHaus 5-Tier Garage Shelving Unit, 1.8m Heavy Duty Racking, Hammered Grey- Steel
- 875kg Total Load Capacity
£29.99
Pros
- Holds up to 875kg across all shelves (175kg per shelf)
- Boltless design assembles in under 30 minutes
- Budget-friendly for the capacity offered
Cons
- Steel frame can mark unpainted concrete floors
FAQ
What do 'Short', 'Medium' and 'Long' garage storage sizes actually mean?
These terms generally refer to the width of the unit, measured in centimetres. ‘Short’ typically indicates 90cm - 120cm, ‘Medium’ is 120cm – 180cm, and ‘Long’ covers 180cm upwards; always check the product description for precise dimensions.
My garage is quite small – how can I choose a suitable storage size?
For smaller garages (under 8m²), a 'Medium' sized unit at around 120-150cm wide would likely be most practical, allowing you to store essentials without overcrowding. Consider the height and depth too; a taller, narrower unit might be better than a bulky one.
What is a ‘Wide’ garage storage unit designed for?
‘Wide’ units are typically 180cm or more in width, suitable for garages needing to store larger items like bikes, outdoor furniture, or tools that require significant space. They're generally best suited for garages of at least 8m².
How is garage storage size usually measured?
Manufacturers primarily measure the internal width of the unit – this is the distance from one side to the other when fully open. Ensure you account for any frame or support structures that might reduce usable space.
I’m unsure how to accurately measure my garage’s width.
Use a measuring tape to take several measurements across the widest parts of your garage, including any obstructions like pillars or doorways. Record the largest measurement to ensure you have enough room for the chosen storage unit.
What does ‘Depth’ refer to when choosing garage storage?
‘Depth’ describes the internal distance from the front edge of the unit to the back wall, typically in centimetres. This is important as it dictates how much space you have for items within the unit's interior.
Should I consider the height of the storage unit when measuring?
Yes, definitely! The height of the unit needs to be compatible with your ceiling height and the items you plan to store. Most units offer adjustable shelving, but check the maximum shelf height before purchasing.
What if the product description doesn't specify dimensions – how can I find out more?
Always check the retailer’s (e.g., Amazon’s) product page for detailed specifications and diagrams. If information is lacking, contact the manufacturer directly to request further details.
Are there any standard sizes recognised by storage manufacturers?
While not strictly standardised, most UK garage storage units fall into the categories described above – Short (90-120cm), Medium (120-180cm) and Long (180cm+). Always confirm these measurements with the product listing.
What if I'm buying a garage storage unit online, and it doesn’t seem to fit my space?
Review the retailer’s returns policy – typically, Amazon offers options for returning items that don't meet your requirements. Carefully measure your garage again before confirming your order.
In depth
Garage storage units come in a bewildering array of sizes, all described using confusing terms like ‘Small’, ‘Medium’, ‘Large’, and occasionally numerical dimensions like 120cm x 60cm. Understanding what these actually mean – and crucially, how they relate to your garage space – is vital before committing to a purchase. The biggest mistake UK shoppers make is simply measuring their garage and then selecting the first unit that looks remotely appropriate; this rarely results in a successful fit and can lead to frustration and wasted money. It’s far more effective to consider your storage needs, the available floor space within your garage, and the accessibility of the unit – both for loading items in and retrieving them later.
The most common sizes you'll encounter are based on overall external dimensions: 80cm wide x 45cm deep x 120cm high represents a ‘Small’ unit, typically suitable for a single person needing to store seasonal items like Christmas decorations or gardening tools. These units are ideal for smaller garages – roughly 1.8m x 1.2m – and offer minimal storage capacity but are incredibly easy to manoeuvre and don't take up much space. A ‘Medium’ unit, measuring approximately 120cm wide x 60cm deep x 180cm high, is a more sensible choice for a couple or a small family needing to store slightly larger quantities of goods. This size comfortably fits into garages around 2.4m x 1.8m and provides a good balance between storage space and accessibility. The key with ‘Medium’ units is ensuring there's enough headroom – at least 1.8m – for comfortable access, especially if you plan on stacking items high.
Moving up to ‘Large’ garage storage units, typically around 180cm wide x 90cm deep x 240cm high, requires a significantly larger garage space – roughly 3m x 2.4m or greater. These are generally suitable for families with more extensive storage needs, such as sports equipment, camping gear, or surplus household items. However, be aware that ‘Large’ units can become cumbersome to move and require careful consideration of access routes within the garage. It's also crucial to assess whether you have sufficient headroom – at least 2.4m – for comfortable use, especially if storing taller items. Furthermore, ensure there’s adequate space around the unit for easy access, allowing a minimum of 60cm on all sides.
Beyond these standard sizes, some manufacturers offer bespoke storage solutions. These are often built to measure and can be incredibly useful if your garage has unusual dimensions or you require specific configurations. However, bespoke units tend to be more expensive and may involve longer lead times. When considering a bespoke unit, provide the manufacturer with precise measurements of your garage, including any obstructions such as pillars or ventilation systems. Be prepared to pay a premium for this level of customization, but it can ultimately deliver a perfect fit and maximize storage efficiency.
A common sizing misunderstanding amongst UK homeowners is equating ‘Large’ with ‘extra large’. While a 180cm wide unit might seem substantial, it's crucial to remember that the depth (90cm) and height (240cm) are equally important. A deep, narrow unit can quickly become impractical, particularly if you need to access items from the back without having to move everything forward. Similarly, a tall, narrow unit may require uncomfortable reaching or bending, potentially causing strain. Always prioritise depth over height – generally, a minimum depth of 90cm is advisable for most garage storage units to allow for comfortable retrieval of items. Finally, consider the weight capacity of the unit; many are designed for lighter goods but can struggle with heavy items like tools or sports equipment.
Before purchasing any garage storage unit, meticulously measure your available space – not just the overall length and width, but also the height from floor to ceiling, taking into account any obstructions. Draw a detailed sketch of your garage, noting the location of doors, windows, pillars, and other features that may affect access. Add a margin of at least 30cm on all sides of the unit to allow for comfortable manoeuvring and prevent it from being crammed against the walls. Don't rely solely on the manufacturer’s stated dimensions; always measure your own space independently to avoid costly mistakes. Remember, a well-planned garage storage solution can dramatically improve organisation and utilise valuable floor space, while an ill-fitting unit will only create clutter and frustration.
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-09.