Storage Unit Size Calculator: How to Choose the Right Storage Unit
Not sure what size storage unit you need? Use our storage space calculator and size guide to find the right unit for your items.
Picking the right unit is easier than you might expect. In this self storage size guide, we’ll show you how to choose the right space for your needs and how to use our self storage unit size calculator. If you’re new to self storage, you’ll also find helpful tips on storage options, pricing, and location.
Calculate Your Storage Needs with Our Storage Calculator
Whether you’re storing personal belongings or business items, the amount of space you need will vary. At Attic Self Storage, we offer a wide range of self storage unit sizes, so you can choose a space that fits your needs — without paying for more than you use.
Our storage size calculator makes it easy to find the right unit in just a few clicks, helping you choose with confidence.
These are just some examples from the range of sizes we have available. View by location to see the full range.
We recommend a:
10 ft2 unit
Ideal for storing the contents of a small car or the equivalent of a double wardrobe
Get a quoteHow Big of a Storage Unit Do I Need?
Our self storage space calculator helps you estimate the amount of storage space you need today, but before you book, take a moment to consider a few key details:
- The type of items you plan to store
- Whether you’re storing for business and may need more space in the future
Next, use the storage unit size chart below to compare your options. It shows the unit sizes we offer, what each one is best for, and what may not fit, helping you choose the right unit first time.
Storage Unit Size Chart
Extensive business storage or major home clearances
Industrial-scale storage needs
Our 3-Step Guide to Using the Storage Unit Size Calculator
To make things easier, we’ve created a storage space calculator to help you work out which storage unit size best suits your storage needs — whether you’re storing a few items or the contents of a 3-bedroom house. Just follow the three simple steps below to get a clear idea of the space you’ll need before choosing your unit.
Step 1: Use the Storage Space Calculator Slider to Check Out the Range of Sizes
Start by using the space size slider to get a rough idea of how much storage space you’ll need. Simply move the slider until it matches the amount of space your items would usually take up at home. To help you picture this, the calculator compares your items to familiar spaces, such as:
- A wardrobe or double wardrobe
- A full kitchen or small garden shed
- A studio or one–two bedroom flat
- A two or three-bedroom house
- A single or double garage
- Larger homes, up to a four or five-bedroom house
Step 2: See What Your Chosen Space Can Hold
Alongside your selected unit size, we show easy, everyday comparisons — such as vehicle size and the number of storage boxes it can hold — to help you get a better feel for the space.
For example, a 10 sq ft unit is roughly the size of a double wardrobe and can hold the contents of a small car, or around 10–15 standard-sized boxes.
Step 3: Get a Quote for Your Selected Storage Unit Size
Once you’re happy with the space you’ve chosen, you’ll see the storage unit size we recommend. Units are shown in square feet (sq ft), with square metres (sq m) included for reference.
When you’re ready, you can get an instant quote by entering your postcode to check availability and pricing for your chosen unit at any of our nine London locations.
We hope our self storage unit size guide is helpful to you. When it comes to choosing a storage unit with us, you’re not alone. We’re on hand to help you along every step of the journey. With multiple stores across the city, our friendly teams can help you get the right storage solution for you.
Our Storage Unit Sizes
10 sq ft
15 sq ft
20 sq ft
25 sq ft
45 sq ft
70 sq ft
80 sq ft
85 sq ft
160 sq ft
300 sq ft
