Storage Unit Size Guide
Choosing the right storage unit can feel overwhelming—how much space do you really need? Go too small, and you might end up cramming everything in a way that’s frustrating to access. Go too big, and you’re paying for extra space you don’t use.
An appropriately sized self-storage unit allows you to store your belongings efficiently, keep everything organized, and access what you need without hassle. Whether you’re storing a few seasonal decorations, an entire home’s worth of furniture, or business inventory, the right storage space makes all the difference.
This Storage Unit Size Guide helps you visualize what will fit inside each unit, so you can confidently pick the perfect space for your needs.
Our Storage Unit Sizes
Unit size 5’x5′(25 Sq.Ft.)
Equivalent to:
Standard Closet
Can hold:
Personal items, clothes, boxes, skis, children’s toys, small furniture items, business records, sales materials, etc.
Similar sizes:
3’x3’ storage locker (9 sq ft)
5’x6’ (30 sq ft)
4’x10’ (40 sq ft)
Unit size 5’x10′(50 Sq.Ft.)
Equivalent to:
Walk-in-Closet
Can hold:
Small amounts of furniture, sofas, chairs, chest of drawers, box spring and mattress, business supplies, and records. Plus room for other small items and boxes.
Similar sizes:
4’x10’ (40 sq ft)
5’x12’ (60 sq ft)
Unit size 7.5’x10′(75 Sq.Ft.)
Equivalent to:
Large Closet
Can hold:
Small amounts of furniture, sofas, chairs, chest of drawers, box spring and mattress, business supplies, and records. Plus room for other small items and boxes.
Similar sizes:
5’x15’ (75 sq ft)
8’x10’ (80 sq ft)
6’x14’ (84 sq ft)
Unit size 10’x10′(100 Sq.Ft.)
Equivalent to:
Half of a one-car garage
Can hold:
One-bedroom apartment with major appliances, other furniture, and supplies.
Similar sizes:
8’x11’ (88 sq ft)
9’x9’ (89 sq ft)
10’x10.5’ (105 sq ft)
8’x15’ (120 sq ft)
10’x12’ (120 sq ft)
Unit size 10’x15′(150 Sq.Ft.)
Equivalent to:
two-thirds of a one-car garage
Can hold:
A two-bedroom apartment or house, including appliances, boxes, miscellaneous items, and commercial storage inventory.
Similar sizes:
10’x16’ (160 sq ft)
12’x14’ (168 sq ft)
10’x17’ (170 sq ft)
10’x18’ (180 sq ft)
11’x17’ (187 sq ft)
10’x19’ (190 sq ft)
14’x14’ (196 sq ft)
Unit size 10’x20′(200 Sq.Ft.)
Equivalent to:
Standard one-car garage
Can hold:
A three-bedroom house with major appliances and many boxes. Can fit a vehicle along with additional household and personal items. Business storage files and inventory ideal for storage racks.
Similar sizes:
10’x21’ (210 sq ft)
11’x20’ (220 sq ft)
10’x23’ (230 sq ft)
10’x24’ (240 sq ft)
10’x25’ (250 sq ft)
Unit size 10’x30′(300 Sq.Ft.)
Equivalent to:
Standard two-car garage
Can hold:
A four-to-five-bedroom house with major appliances and room for furniture and plenty of boxes. Can fit 1-2 vehicles along with additional appliances and household items. Also excellent for business storage of files and permanent records or construction equipment and supplies.
Similar sizes:
12’x24’ (288 sq ft)
12’x25’ (300 sq ft)
12’x30’ (360 sq ft)
20’x20’ (400 sq ft)
12’x35’ (420 sq ft)
15’x30’ (450 sq ft)
12’x40’ (480 sq ft)
16’x30’(480 sq ft)
20’x25’ (500 sq ft)
About Storage Unit Sizes
Small Storage Units (5’x5’ to 7.5’x10’)
These compact units are great for those who need just a little extra space — whether it’s seasonal decorations, sports gear, or important business documents. They’re also ideal for individuals in transition, like college students storing belongings between semesters.
Medium Storage Units (10’x10’ to 10’x20’)
If you’re moving or decluttering, medium units are the sweet spot. They can fit the contents of a small home or apartment, making them perfect for storing furniture, appliances, and larger household items. Business owners also love these for keeping extra inventory and supplies.
Large Storage Units (10’x25’ and up)
For those with a big move or long-term storage needs, large units provide enough room for multiple rooms of furniture, large appliances, and even vehicles. They’re also great for businesses that need secure, accessible storage for equipment and inventory.
Tips for Maximizing Storage Space
1. Smart Placement Matters
Put items you won’t need often toward the back or bottom and things you’ll want to access regularly up front. That way, you’re not digging through everything when you need something quick.
2. Label Everything & Keep It Organized
Clearly mark each box and group similar items together—for example, stack all kitchen boxes in one section and keep all seasonal decorations together. This will save you time and frustration later. Learn more about How to Organize Your Storage Unit.
3. Use Vertical Space to Your Advantage
Stack boxes high (as long as they’re sturdy), and consider using industrial shelving for things you’ll need often. If storing furniture, try standing it on its side instead of laying it flat—this saves a ton of room! Thinking vertically isn’t just smart for storage units either; building “up” within a small home or studio apartment makes a big difference as well.
For more smart storage and organizing advice, check out our Storage Tips Blog.
Storage Unit Size Guide FAQs
How do I know what size unit I need?
Start by making a list of what you’ll store and measure how much space those items take up. If you’re unsure, visiting a storage facility in person can help you visualize what will fit.
What happens if I pick a storage unit that’s too small?
If your unit is too small, you may struggle to fit everything inside safely or have trouble accessing items later. It’s better to slightly size up if you’re unsure—especially if you plan on adding more items over time.
Do I need storage insurance?
It’s always a good idea to get storage insurance to protect the items that you’re storing. Learn more about storage insurance.
How do I estimate the amount of space I’ll need for my stuff?
A good rule of thumb is to measure your biggest items first, then consider how many boxes or bins you’ll be stacking. If your belongings currently fill a moving truck, you’ll typically need a unit size that matches the truck size (for example, a 15-foot moving truck often fits into a 10’x15’ unit).
What security measures are in place at Utah Storage Center?
We offer fenced premises with gated access, surveillance cameras, daily property walk-throughs and lock checks so you can store with confidence.
Are the units clean and well-maintained?
We do our best to keep our storage facilities clean, pest-free, and well-lit, so your belongings stay in top shape! We also have on-site facility managers so don’t hesitate to reach out if you ever have any concerns.
How long can I rent a unit for?
As long or short as you need! You can rent your storage unit month-to-month or long-term—whatever works best for your needs and situation.
Self-storage that
won't break the bank
Unit size 5’x5 (25 Sq.Ft.)
Equivalent to: Standard Closet
Can hold:
Personal items, clothes, boxes, skis, children’s toys, small furniture items, business records, and sales materials.
Similar sizes:
3’x3’ (9 sq ft storage locker)
5’x6’ (30 sq ft)
Unit size 5’x10′ (50 Sq.Ft.)
Equivalent to: Walk-in Closet
Can hold:
Small amounts of furniture, sofas, chairs, chest of drawers, business supplies, and records. Plus room for other small items and boxes.
Similar sizes:
4’x10’ (40 sq ft)
5’x12’ (60 sq ft)
Unit size 7.5’x10′ (75 Sq.Ft.)
Equivalent to: Large Walk-in Closet
Can hold:
Small amounts of furniture, sofas, chairs, chest of drawers, box spring and mattress, business supplies, and records. Plus room for other small items and boxes.
Similar sizes:
5’x15’ (75 sq ft)
8’x10’ (80 sq ft)
6’x14’ (84 sq ft)
Unit size 10’x10′ (100 Sq.Ft.)
Equivalent to: Half of a one-car garage
Can hold:
One-bedroom apartment with major appliances, furniture, and supplies. boxes.
Similar sizes:
8’x11’ (88 sq ft)
9’x9’ (89 sq ft)
10’x10.5’ (105 sq ft)
8’x15’ (120 sq ft)
10’x12’ (120 sq ft)
Unit size 10’x15′ (150 Sq.Ft.)
Equivalent to: Two-thirds of a one-car garage
Can hold:
A two-bedroom apartment or house, including appliances, boxes, miscellaneous items, and commercial storage inventory.
Similar sizes:
10’x16’ (160 sq ft)
12’x14’ (168 sq ft)
10’x17’ (170 sq ft)
10’x18’ (180 sq ft)
11’x17’ (187 sq ft)
10’x19’ (190 sq ft)
14’x14’ (196 sq ft)
Unit size 10’x20′ (200 Sq.Ft.)
Equivalent to: Standard one-car garage
Can hold:
A three-bedroom house with major appliances and many boxes. Can fit a vehicle along with additional household and personal items. Business storage files and inventory ideal for storage racks.
Similar sizes:
10’x21’ (210 sq ft)
11’x20’ (220 sq ft)
10’x23’ (230 sq ft)
10’x24’ (240 sq ft)
10’x25’ (250 sq ft)
Unit size 10’x30 ′(300 Sq.Ft.)
Equivalent to: Standard two-car garage
Can hold:
A four-to-five-bedroom house with major appliances and room for furniture and plenty of boxes. Can fit 1-2 vehicles along with some additional appliances and household items. Also excellent for business storage of files and permanent records or construction equipment and supplies.
Similar sizes:
12’x24’ (288 sq ft)
12’x25’ (300 sq ft)
12’x30’ (360 sq ft)
20’x20’ (400 sq ft)
12’x35’ (420 sq ft)
15’x30’ (450 sq ft)
12’x40’ (480 sq ft)
16’x30’(480 sq ft)
20’x25’ (500 sq ft)