What Size of Storage Unit Do I Need?

The right size of the storage unit you need is the one that best fit the volume of your belongings and purpose. The price difference that exists between small and medium storage units is above $800 per annum – even if you make use of one of the best self-storage providers.
What Size of Storage Unit Do I Need?

The right size of the storage unit you need is the one that best fit the volume of your belongings and purpose. The price difference that exists between small and medium storage units is above $800 per annum – even if you make use of one of the best self-storage providers. That implies that estimating your needed size before you rent a unit is important.


Picking out the perfect size storage unit or portable container is mainly about finding the best deal that enables you to pay for more space than necessary and not having enough space after loading most of your belongings.


So, how do you handle that? This guide provides tools, tips, and a useful chart to assist you to determine the actual size you need for your move.


Overview of the Guide on Storage Unit Size


Each one of our storage centers offers different storage type, and information of rough calculation of the exact quantity you can fit in each unit.


Below are different storage unit sizes with their various fits:


5x5 Unit (25 sq. ft.): Nearly the size of a home closet. Perfect for storing additional items like twin-size mattresses, boxes, books, records/files, and other small miscellaneous items.


5x10 Unit (50 sq.): Perfect for storing items inside a studio apartment, including multiple boxes, a small mattress set, a motorcycle, or chairs.


5x15 Units (75 sq.): Perfect for storing the contents of a one-bedroom apartment. Suitable for furniture such as a chair, couch, and small dining set, bicycles, business merchandise, sporting equipment, and seasonal items.


10x10 Unit (100 sq.): Perfect for holding the contents of a two-bedroom home. Suitable for storing entertainment center, larger appliances, furniture, king-size mattresses, dining room, and other items you would find in a two-bedroom space.


10x15 Unit (150 sq.): Perfect for holding the contents of a three-bedroom home. Suitable for keeping large screen TVs, bikes, full fining room set, sporting equipment, large furniture, or even music equipment such as a C-3 Piano, drum set, or other equipment necessary for a multiple-month long tour.


10x20 Unit (200 sq.): Now, we are within the sizes perfect for boats, cars, and other vehicles. A 10 by 20 unit is perfect for a small car with additional space to spare or a three-to-four-bedroom set. Load sports equipment, boxes, small furniture set, or other medium personal belongings in the remaining space.


10x25 Unit (300 sq.): This is suitable for holding a large vehicle, small boat as well as other large items with space to spare. Moving to a new location? This size unit is perfect for storing possessions of a large home as you settle in.


Size Comparison Chart     


Home Size /
Square Feet




< 400 SF
Small Studio Apt



Cargo Van or
10′ Truck

600 SF
Studio/1 BR Apt

8′ or 12′

5’x10′ or

10′, 15′ or 16′

800 SF
1 to 2 BR Apt



15′ or 16′

1,000 SF
2 BR Apt/Home

Single 16′ or
16′ + 8′

10’x15′ or

15′ or 16′

1,200 SF
2-3 BR Apt/Home

Single 16′ or
16′ + 8′

10’x15′ or

15′, 16′ or 18′

1,600 SF
3 BR Apt/Home

16′ + 8′ or
Two 16′

10’x20′ or

20′, 22′ or 26′

2,000 SF
4 BR Home

Two 16′


(may take multiple trips)

2,500 SF
4-5 BR Home

Two 16′ + 8′ or
Three 16′

(may need more)

Multiple trips or
other options

3,000 SF
5-6 BR Home

Three 16′

10’x30′ plus

Multiple trips or
other options

More than
3,000 SF

One 16′
per 1,000 SF

10’x30′ plus

Multiple trips or
other options


TIP: note that this container matrix is only an estimate. Suggested container sizes are mainly for guidance. Larger items as well as how containers are efficiently loaded can greatly affect the size and number of storage units, containers, and rental trucks you’ll need. PODS is always upgrading its fleet of containers and container sizes may differ a bit from one model to another.


Six Steps to Estimate the Size of Storage Unit You Need


Irrespective of whether you need short-term storage during a home remodeling or your garage is overfilled after moving, these five steps could save you a lot of money:


1. Take inventory of your items


The number one step to estimating the size of the storage unit you need is to determine the number of belongings you have. Count your entire moving boxes and point out larger belongings like tables, couches, and bookshelves. Make sure you write all these things down so you can check them later.


2. Verify your home storage options


After you have taken inventory of each room, the next step is to ensure you make use of all the available storage space in your home. The final thing is to pull the cord on a storage unit, only to discover that you could have bought a smaller (and cheaper) one by storing some of your items in a partly empty room or an unused part of your garage. The distinction between small and medium-sized storage units is around $840 per annum so it is better to take 5 minutes to verify your options.

  • Tip: What enters a small storage unit? Small storage units often hold a maximum of 50 square feet of items. People usually store smaller belongings such as patio furniture, seasonal items, small furniture, and outdoor gear in small units.

3. Calculate your space


  • Square feet (sq. ft.): Multiply the length and width of your goods. If they create a pile that is around 5 by 5 feet, you would need a storage unit with a minimum of 25 square feet.
  • Cubic feet (cu. ft.): Multiply the width, length, and height of your items. If they create a pile that is around 5 by 5 by 5 feet, you would need a storage unit with a minimum of 75 square feet.
  • There is no better way to measure your items. One method is to put all your belongings into a pile, take off them and stack them. Another alternative is to measure the length, width, and height of each item. Anything works since you have an estimate of your measurement in square or cubic footage.
  • Tip: What do I use to take measurements of my items? You can make use of a standard tape measure, yardstick, or consider using a ruler to take measurements ts of your belongings. Just note down the measurement on your phone and make a comparison with available sizes of storage units.

4. Select a small, medium, or large size of the storage unit


After taking measurements of everything, find out whether a small, medium, large unit will be perfect. There are many storage unit sizes, but they all in these three categories. Small units contain about 50-sq-ft of items, the medium unit measures 150 sq-ft, and large units can hold as much as 300 sq-ft.


Storage Unit Size Guide



Common Dimensions (Feet)

Square Footage

Cubic Footage

What Fits


5 x 5–5 x 10



Up to 1 room


5 x 15–10 x 15



Up to 3 rooms


10 x 20–10 x 30



Up to 5 rooms


Note: Sizes, dimensions, and details are only estimates and may vary based on location.


The easiest way to choose an initial size is to make a comparison of your measurements from step 3 with the storage unit size guide. For instance, if the measurement of your inventory equals 125-sq-ft, you would want a medium storage unit since its size range from 75 to 150 square feet.

  • Tip: What is the height of storage units? Most storage units are around 8-ft tall- which means 6’ 9’ Lebron James would have only 1-ft of space between his head and ceiling.

5. Research certain measurements


The #5 step is to estimate the size of the storage unit you need by checking with storage facilities and select an actual size. You can save costs by selecting a unit large enough to store your belongings, but not so big that you have several ext. in step 4, you screened your option small, medium, or large unit. Now, you want to check storage unit websites to obtain measurements that are more specific and find out the companies that will fit (they all offer few unique recommendations). We advise you to check our top storage unit providers near you.

6. When not sure, go big


A lot of new customers underestimate their storage needs and pick a smaller unit to avoid the price of the next larger unit size. It is often just a few bucks more. If you want to easily get to your items, choose a unit that is one size larger and allows a path. This makes retrieval of items from the back of the storage unit easier if you need to.  

Storage Units and Pricing by the Provider


Company name

What to know

No of storage unit sizes

Average monthly cost

Extra Space Storage

Best overall




Lots of sizes



Simply Self Storage

Low prices




Wide availability



Life Storage

Great customer service




Most Common Sizes of Storage Unit for Top Markets by States


City, State

Unit Size

Avg. Price Per Month

Los Angeles, CA



Chicago, IL



Denver, CO



San Antonio, TX



Atlanta, GA



Austin, TX



Phoenix, AZ



San Diego, CA



Las Vegas, NV



Miami, FL



Washington, D.C.



Philadelphia, PA



Houston, TX



New York, NY



Dallas, TX




How to Save Cost on your Storage Unit


Estimating the size of the storage unit you need will save you money and time. It is a stress to rent a unit and find out it is not sufficiently big. And it is no fun to discover that you must provide an additional $70 every month for a storage space that is partly empty after filling it up.


Below are some tips to make it easier to select a storage unit size- and affordable:


1. Make costs comparison:


Storage units usually cost more than your belongings. For instance, if you rent a storage unit to keep a dresser, a few bookshelves, and an e be will likely cost around $160 per month – or almost $2,000 per annum. At some point, buying everything later is even cheaper than storing it. That is not helpful if you need to store items that cannot be replaced such as legal documents or yearbooks. But it will surprise you how usually people spend more money on storage units than their items are worth.


2. Find out your largest belongings:


In some cases, you don’t have to make a comprehensive inventory. Another option is to fast estimate your need for a small, medium, or large unit by picking out your longest and widest belongings. As contained in our guide on a storage unit, anything beyond 10-ft long or wide negates a small unit, while belongings more than 15-ft take you up from a medium to large-sized unit facility: you can read every storage unit guide that exists in the world, but there is nothing as great as the actual thing. Take some time to check out your nearest storage facility. Go inside some units and determine how big they are. A 1-hour visit could prevent you from overspending.


3. Ask about certain sizes:


A lot of storage unit providers have more sizes available than those mentioned on their website. Contact your nearest storage centers, provide your estimated square or cubic footage for them, and find out the unit that almost matches your needs. It is like asking them to check in-store for your actual size preference. You could get a perfect fit with that.


4. Talk to many companies:


Just because a storage unit provider has a medium-sized unit doesn’t imply that you can rent it. In most cases, tenants have occupied your desired spaces. But that is not the end of everything. Look for storage unit companies closer to your zip code and check their sales online. You will probably find the unit you need.


Read How to Find a Cheap Storage Unit for Your Move?

5. Consider moving containers:


Don’t forget about choices for portable storage solutions if what you need is just temporary storage. A lot of people make use of moving containers as an affordable alternative to rental moving trucks, but you also can store them at your home while they charge you a monthly fee. You may be able to save a lot of money, and the stress of shipping your items to and from the storage facility.




As you make use of this guide, don’t forget the sizes of your special items and how you pack and load will have much impact on the amount you can fit in a space.


FAQ on Storage Unit Size


How big is a 5 by 5 unit?


A 5 by 5 storage unit is 5 feet long and 5 feet wide (equals 25 square feet). The median cost for one of these small storage paces is roughly $90 per month.


How big is a 10 by 10 storage unit?


A 10 by 10 storage unit is 10-ft long and 10-ft wide (or 100 sqft). The median cost for one of these medium-sized self-storage units is roughly $160 per month.


How big can storage units be?


Storage units’ size starts from 3 by 3 feet (small) to large size that measures 10 by 30 feet. Occasionally, you can find around 50-ft long made for oversized recreational vehicles. Prices differ, but you can generally pay more for larger units than smaller ones.


What is the median size of a storage unit?  


The median storage unit size is roughly 10 by 10 feet (or 100 sq-ft). These medium-sized storage units cost about $160 per month and can usually fit items from one to three bedrooms.


What is the size of storage I need?   


The size of the storage unit that you need is based on how many belongings you own. We recommend you estimate the square footage of your goods and then pick from a small, medium, or large storage unit that measures 20 to 25 square feet, 75 to 150 square feet, or 200 to 300 square feet respectively.


What standard storage unit size is the largest?


The 10 by 30 feet is the standard largest size of the storage unit. These large units accommodate 300-square feet (or 2,400 cubic feet) and cost almost $290 per month.


Where can I get 10 by 10 storage?


You can visit any major storage center to find 10 by 10 storage. We recommend additional space storage, Simply Self Storage, and CubeSmart.


What is the median cost of a 5 by 5 storage unit?


The median cost of a 5 by 5 storage unit is around $90 per month. These small 25-sq-ft units usually fit a lot of items from one small bedroom.


What size of storage unit is perfect for major appliances?


You normally need a medium or large-sized storage unit for your main appliances. Even though the majority of storage unit providers recommend large storage units for main appliances, you can usually load items like washers, refrigerators, dryers, and fridges in medium-sized units.