Storage Unit Size Guide: 5x5 vs. 5x10 vs. 10x10

Choosing the right storage unit can feel confusing, especially when you’re trying to picture how much space you actually need. A 5x5, 5x10, and 10x10 storage unit may sound similar at first, but each size works best for different situations. Maybe you’re clearing out a closet, storing furniture during a move, downsizing, or making room in your garage. No matter the reason, this storage unit size guide will help you compare three of the most common storage unit sizes: 5x5, 5x10, and 10x10.

By the end, you’ll have a better idea of what fits in each unit and which storage size makes the most sense for your belongings.

Quick Storage Unit Size Comparison

Before we look at each size in detail, here’s a quick comparison:

A simple way to think about it is this: a 5x5 unit is similar to a small closet, a 5x10 unit is closer to a walk-in closet, and a 10x10 unit is about the size of an average bedroom.

What Fits in a 5x5 Storage Unit?

A 5x5 storage unit is one of the smallest storage options available, but it can still hold more than many people expect. With about 25 square feet of floor space, this size is ideal for people who need a little extra room but don’t have large furniture or bulky household items to store.

A 5x5 storage unit is a great choice for:

• Small and medium boxes
• Holiday decorations
• Seasonal clothing
• Sports gear
• Camping equipment
• Small bookshelves
• Lamps
• Small dressers or nightstands
• File boxes
• Dorm room overflow
• Business supplies
• Kids’ toys or baby items

This size is especially useful if you’re decluttering your home, cleaning out a closet, or storing items you don’t use every day. For example, if your garage is packed with holiday bins, luggage, tools, or sports gear, a 5x5 unit can help free up valuable space at home.

A 5x5 unit can also work well for college students who need a place to store a few boxes, bedding, small furniture, and dorm room essentials between semesters.

However, a 5x5 storage unit is not usually the best option for large furniture sets, major appliances, or the contents of an entire apartment. If you need to store a mattress, couch, dining table, or several rooms of furniture, you’ll likely want to consider a larger unit.

What Fits in a 5x10 Storage Unit?

A 5x10 storage unit gives you about 50 square feet of space, which is twice the floor space of a 5x5 unit. This size is one of the most popular options because it offers a good balance between affordability and flexibility.

A 5x10 storage unit can typically fit:

• Queen mattress set
• Twin or full mattress
• Small couch or loveseat
• Dresser
• Nightstands
• TV
• Small dining set
• Chairs
• Bicycle
• Several boxes
• Seasonal decorations
• Dorm room furniture
• Small apartment items
• Business inventory or supplies

A 5x10 unit is often a smart choice for people storing the contents of a studio apartment or dorm room. It can also work well during a small move, home renovation, or temporary transition.

For example, if you’re moving into a new apartment but have a gap between leases, a 5x10 storage unit may give you enough space for your mattress, boxes, small furniture, and personal items. It’s also a helpful size if you need to store furniture while remodeling a bedroom, office, or small living space.

This size can also be useful for small business owners. If you run an online shop, a 5x10 unit may provide enough room for inventory, shipping supplies, display materials, or extra equipment without taking over your home office or garage.

The main benefit of a 5x10 unit is that it gives you enough room for bulkier items while still being smaller than a full bedroom-sized storage unit. If you need to store more than boxes but don’t have a whole house's worth of belongings, this size is often a good fit.

What Fits in a 10x10 Storage Unit?

A 10x10 storage unit provides about 100 square feet of storage space, making it one of the most versatile unit sizes. It’s roughly the size of an average bedroom and is a good choice when you need to store furniture from multiple rooms.

A 10x10 storage unit can typically fit:

• Bedroom furniture
• Living room furniture
• Mattress sets
• Dressers
• Nightstands
• Sofa or sectional pieces
• Coffee table
• Dining table and chairs
• Bookshelves
• Office furniture
• Boxes and storage bins
• Small appliances
• Patio furniture
• Business equipment
• Contents from a one-bedroom apartment

Depending on how much you own and how efficiently everything is packed, a 10x10 storage unit may also work for some two-bedroom apartments. It’s a strong choice if you’re moving, downsizing, renovating, or storing items for a longer period of time.

A 10x10 unit also gives you more room to organize your belongings. With smaller units, you may need to stack items tightly from floor to ceiling. With a 10x10, you usually have more flexibility to leave a small walkway, group similar items together, and access boxes or furniture without unpacking the entire unit.

This can be especially important if you plan to visit your storage unit regularly. For example, business owners, seasonal decorators, and families storing rotating items may appreciate having extra room to move around.

5x5 vs. 5x10 vs. 10x10: Which Size Should You Choose?

The best storage unit size depends on what you’re storing, how long you need storage, and whether you’ll need regular access to your belongings.

Choose a 5x5 storage unit if you only need space for boxes, seasonal items, small furniture, or closet overflow. This size is best for light storage needs and small personal items.

Choose a 5x10 storage unit if you need room for a mattress, small couch, studio apartment items, dorm furniture, bikes, or several boxes. This is a good middle-ground option for people who need more than a small closet-sized space but don’t need a large unit.

Choose a 10x10 storage unit if you’re storing furniture from multiple rooms, moving out of an apartment, renovating, or need enough space to organize and access your belongings comfortably.

When deciding between sizes, it’s usually better to think beyond the exact square footage. Consider the shape and size of your items. A few large pieces of furniture can fill a unit quickly, even if you don’t have many boxes. On the other hand, neatly packed boxes can often be stacked to make better use of vertical space.

Tips for Choosing the Right Storage Unit Size

If you’re still unsure which size you need, start by making a quick inventory of your belongings. Write down the largest items first, such as mattresses, couches, dressers, tables, appliances, or shelving units. Then estimate how many boxes or bins you’ll need to store with them.

It also helps to think about access. If you’re storing items you won’t need for several months, you may be able to pack the unit more tightly. But if you’ll need to grab holiday decorations, documents, inventory, or seasonal gear, choose a size that allows you to leave an aisle.

You should also consider whether items can be disassembled. Bed frames, tables, shelving units, and desks often take up much less room when taken apart. Just remember to keep screws and hardware in labeled bags so everything is easy to reassemble later.

Finally, when in doubt, it may be worth sizing up. Renting a slightly larger unit can make packing easier, reduce the risk of damage, and give you more flexibility if you end up having more items than expected.

How to Pack Your Storage Unit Efficiently

No matter which size you choose, good packing can help you get the most out of your storage space.

Start by using sturdy boxes that are similar in size. This makes them easier to stack and helps prevent leaning or shifting. Place heavier boxes on the bottom and lighter boxes on top. Avoid overpacking boxes, especially with books, dishes, or tools, because they can become difficult to lift and may break.

Label every box clearly on more than one side. This makes it easier to find what you need later without opening everything. If you’re storing a lot of items, create a simple inventory list and keep a copy on your phone.

For furniture, use covers or moving blankets to help protect surfaces from dust and scratches. Store mattresses in mattress bags and avoid placing heavy items on top of upholstered furniture. If possible, leave a small gap between your items and the wall to allow for airflow.

If you’re storing items you may need soon, place them near the front of the unit. Long-term storage items can go toward the back. This simple step can save you a lot of time later.

Frequently Asked Questions

Is a 5x5 storage unit big enough?

A 5x5 storage unit is big enough for boxes, small furniture, seasonal items, sports gear, and closet overflow. It’s a good option if you only need a small amount of extra storage space. However, it may be too small for large furniture or the contents of an apartment.

Can a mattress fit in a 5x5 storage unit?

Some mattresses may fit in a 5x5 unit if stored carefully, but it will be tight. If you are storing a queen mattress, bed frame, and additional boxes or furniture, a 5x10 unit is usually a better choice.

Is a 5x10 storage unit enough for a studio apartment?

A 5x10 storage unit is often a good fit for a studio apartment, especially if you have a mattress, small couch, dresser, TV, and boxes. If you have oversized furniture or a lot of belongings, you may want to consider a 10x10.

Is a 10x10 storage unit enough for a one-bedroom apartment?

Yes, a 10x10 storage unit is commonly used for the contents of a one-bedroom apartment. It can typically fit bedroom furniture, living room furniture, boxes, and smaller household items.

Should I get a larger storage unit than I think I need?

If you’re unsure, choosing a slightly larger unit can be helpful. Extra space makes it easier to organize your belongings, create walkways, and access items without unpacking everything.

Find the Right Storage Unit Size

Choosing between a 5x5, 5x10, and 10x10 storage unit comes down to how much you need to store and how you plan to use the space.

A 5x5 storage unit is best for small storage needs. A 5x10 storage unit is ideal for studio apartments, dorm rooms, and small furniture. A 10x10 storage unit is a better fit for larger moves, apartment storage, and furniture from multiple rooms.

Use this storage unit size guide as a starting point, then compare available unit sizes near you. The right storage unit should give you enough space to protect your belongings, stay organized, and access what you need when you need it.

Need help choosing the right unit? Explore available storage units near you or contact our team for help finding the best size for your belongings.