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Your Guide to What Size Storage Unit You Need

Posted: 21 November 2023

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Looking to store your things and not sure where to start? You will need to calculate how much self storage space you need to get a realistic quote and determine what unit size you should opt for. Here’s your go-to guide for what size storage space you need. 

What Size Storage Unit Do I Need?

Determining the amount of storage space you need for the items you want to store depends on a few factors, including the number of items you need to store, the size of the items, and your preferred level of access to your belongings.

In order to figure out what storage unit size you will need, you should:

1. Make a List of Items 

The first step to determining storage size is to make a list of all the items you plan to store and group them together by their size. 

2. Measure Your Belongings  

You will need to measure the length and width of each item (or box) that you want to store to find the square feet it takes up, so you know what size storage unit you will need. 

To save time, you can also measure one small, medium, and large box and then count how many of each size box you have. Another approach is to put all your things into a pile and measure the entire stack to determine your storage needs.

To work out the square feet of each item, use the formula length (in feet) x width (in feet), and you will get the area size in sq. ft that you need for each item or group of items measured together. For example, if your item has a length of 3 feet and a width of 2 feet, then 3 x 2 = 6 sq. ft. 

3. Consider Features You Need

You may, however, want a bigger space than you have measured if you plan to access your things frequently so that there is always enough space to comfortably manoeuvre around the unit when you retrieve your items. 

Different Sizes of Storage Units

Now that you know how much storage space you need, look at the available unit sizes and see which one meets your needs. 

Storage unit sizes typically start at 10 square foot storage units and can go up to 300 square feet or more! 

Here’s a guide to what would fit in each size storage unit

10 Sq. Ft Storage Unit

The smallest unit size is about the size of a telephone box. You would be able to fit around 48 medium boxes in here. 

25 Sq. Ft Storage Unit

A 25-square-foot storage unit gives you enough space for a van load or 120 medium boxes. 

50 Sq. Ft Storage Unit

This size storage unit is about the size of a transit van. You would be able to fit around 240 medium boxes in here. 

75 Sq. Ft Storage Unit

You could house the contents of a 2-bedroom house or around 360 medium boxes in this size storage unit. 

20 Sq. Ft Storage Unit

This is the same size as a small van load; it could hold 96 medium boxes. 

100 Sq. Ft Storage Unit

For a large amount of space, you could consider this unit, which is the equivalent size of two transit vans of space, and could fit 480 medium boxes. 

200 Sq. Ft Storage Unit

Got a lot to store? This unit is the same size as a double garage and could fit 960 medium boxes. 

Your Storage Size Unit FAQs Answered 

Woman opening storage unit

What Size Storage Unit for a 1-Bedroom House?

For the contents of a one-bedroom house or apartment, you will need around 65 square feet. 

What Size Storage Unit for a 2-Bedroom House?

Typically the contents of a two-bedroom house need around 75–80 square feet. 

What Size Storage Unit for a 3-Bedroom House?

For the contents of a three-bedroom house, you will need around 150–160 square feet. 

What Is the Most Popular Size Storage Unit?

The most popular size for a storage unit is around 100 square feet because of its ability to store various items as a medium-sized storage unit.

How Much Does a Storage Unit Cost?

The cost of a storage unit depends on its size, location, and how easy it is to access. 

Try Our Space Estimator 

This handy tool will help you figure out how much space you need (with visuals)! Try our space estimator now to calculate what size storage unit you should opt for.  

Want a self storage quote? Call Storage King on 0800 0852 954 now or get a quote online! 


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