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Ultimate Storage Unit Size Guide
Choosing the right storage unit size can feel overwhelming, but our storage unit size calculator makes it easy. To find the right storage unit for you, simply select the types and amounts of items you want to store and our calculator will quickly suggest the best unit size for your needs.
Storage Unit Size Calculator
Browse a range of commonly stored items like furniture, mattresses, boxes, and appliances. From kitchen essentials to bedroom furniture, living room decor, office supplies, dining room pieces, garage gear, and more—our tool helps you make an informed choice.
Choose Between Different Storage Unit Size Options
Most people need help picking the right storage unit size. Whether you're looking to store the contents of an entire four-bedroom home or just your seasonal clothing, there's a storage unit size that's right for you. The size guide below compares the most standard storage unit sizes for small, medium, or large units.
Small Storage Units
Choose from a 5x5, 5x10, or 5x15 unit, which are the ideal storage unit sizes for seasonal decor, sporting equipment, business inventory, or small household items. Small storage units range in size from 25 to 75 square feet, which is the equivalent of a hall closet, half bathroom, or compact bedroom.
Storage Lockers
0 to 15
SQ FT
How big is a storage locker?
Storage lockers range from 0 to 15 square feet. They are much smaller than a traditional storage unit and are typically stacked on top of one another. The ceiling height in a storage locker ranges from two to five feet.
What will fit in a storage locker?
A storage locker is ideal if you only need to store a few boxes, bags, or small miscellaneous items.
5’ x 5’ Unit
25
SQ FT
How big is a 5x5 storage unit?
A 5x5 storage unit is 25 square feet and the size of a hall closet or half bathroom.
What fits in a 5x5 storage unit?
A 5x5 storage unit will fit a dresser, a small mattress set, and several boxes. Other uses include holiday decorations, gardening equipment, camping gear, children's toys, and off-season clothing. A 5x5 unit is perfect for about 15-20 regular-size boxes.
5’ x 10’ Unit
50
SQ FT
How big is a 5x10 storage unit?
A 5x10 storage unit is 50 square feet and about the size of a large walk-in closet.
What fits in a 5x10 storage unit?
A 5x10 storage unit will easily fit furniture from a studio or one-bedroom apartment, including a queen-size mattress set, a love seat, a dresser, a TV, a bike, and several storage boxes. It can also easily fit about 30 or more regular-size boxes.
Medium Storage Units
Medium storage units range in size from 10x10, 10x15, or 10x20, which are the ideal storage unit sizes for a one-bedroom apartment up to a two-to-three-bedroom house, depending on how much furniture and large appliances you need to store. Medium-sized units range from 75 to 200 square feet, equivalent to an average bedroom, up to a one-car garage.
5’ x 15’ Unit
75
SQ FT
How big is a 5x15 unit?
A 5x15 storage unit is 75 square feet and similar in size to a small bedroom.
What fits in a 5x15 storage unit?
Furniture from a small one-bedroom apartment, including a queen-size mattress set, love seat, dresser, TV, bike, and several boxes, will fit in a 5x15 unit. A 5x15 unit can hold anywhere from 30 to 35 regular-size boxes.
10’ x 10’ Unit
100
SQ FT
How big is a 10x10 storage unit?
A 10x10 storage unit is 100 square feet and about the size of an average bedroom.
What fits in a 10x10 storage unit?
Furniture items from two bedrooms and an entire family room can fit in a 10x10 storage unit. This may include mattress sets, dressers, nightstands, sofa, chairs, coffee table, book shelves and more. If you were storing nothing but medium-sized boxes that are 20 inches by 20 inches, you could expect a 10x10 storage unit to hold up to 100 boxes. By the time you add furniture pieces and bedroom sets, the number of boxes a unit could hold is more like 50-60.
10’ x 15’ Unit
150
SQ FT
How big is a 10x15 storage unit?
A 10x15 storage unit is 150 square feet, equivalent in size to a small one-car garage.
What fits in a 10x15 storage unit?
A 10x15 storage unit will hold the contents of a two—or three-bedroom house, including oversized items like big-screen TVs, couches, entertainment centers, office furniture, dining tables and chairs, and large kitchen appliances like a refrigerator. A minimum of 60 standard-size boxes should fit within a 10x15 unit.
Large Storage Units
The most common large unit sizes are 10x20, 10x25, or 10x30, ideal storage unit sizes for a three-bedroom or four-to-five-bedroom house with large appliances, like a washer and dryer and refrigerator. Large units are typically the equivalent of a one-car or two-car garage.
10' x 20' Unit
200
SQ FT
How big is a 10x20 storage unit?
A 10x20 storage unit is 200 square feet and the size of a standard one-car garage.
What fits in a 10x20 storage unit?
Items from a three—or four-bedroom house or apartment will fit in a 10x20 unit. These may include couches, mattress sets (queen-size and king-size sets), a dining room set, workout equipment, a refrigerator, and a washer and dryer. A 10x20 storage unit should easily store 80-100 boxes.
10’ x 25’ Unit
250
SQ FT
How big is a 10x25 storage unit?
A 10x25 storage unit is 250 square feet and slightly larger than a standard one-car garage.
What fits in a 10x25 storage unit?
A 10x25 storage unit fits the contents of a large four-bedroom house. It can fit several bedroom sets, living room and game room furniture, gym equipment, large appliances, dining room furniture, office furniture, and a minimum of 100 boxes.
10’ x 30’ Unit
300
SQ FT
How big is a 10x30 storage unit?
A 10x30 storage unit is 300 square feet and the size of a standard two-car garage.
What fits in a 10x30 storage unit?
A 10x30 storage unit will hold items from a fully furnished five-bedroom house, including mattress sets, dressers, couches, a dining room set, an entertainment center, major appliances, seasonal items, outdoor equipment, and bikes. The 10x30 unit is typically one of the largest sizes available and can hold over 100 boxes, as people have a combination of boxes, personal items, and furniture that need safekeeping.
Storage Unit Size Chart
Use the storage unit sizes chart below to find the right size for your needs or personal property.
Unit Size | Square Feet | Cubic Feet | Best For |
|---|---|---|---|
| 0-15 ft² | 0-120 ft³ |
|
| 25 ft² | 200 ft³ |
|
| 50 ft² | 400 ft³ |
|
| 75 ft² | 600 ft³ |
|
| 100 ft² | 800 ft³ |
|
| 150 ft² | 1,200 ft³ |
|
| 200 ft² | 1,600 ft³ |
|
| 250 ft² | 2,000 ft³ |
|
| 300 ft² | 2,400 ft³ |
|
Miscellaneous Items
Storing Oversize items
Oversized Item | Unit Sizes |
|---|---|
 | 10x10 |
 | 5x10 |
 | 5x15 |
 | 5x10 |
 | 5x10 to 10x15 |
 | 5x10 to 10x10 |
 | 5x10 |
 | 5x10 |
 | 5x10 |
Vehicle Storage Units
Search for Vehicle Storage
What Size Storage Unit Is Needed to Store a Car? Explore car storage 
10’ Wide x 15’ Long
- Most compact and two-door cars, like hatchbacks, crossovers, and small SUVs, come in at just around 15 feet in length.
- Always make sure to measure your car before renting out a storage unit; it must be under 15 feet in length to fit in a 10'x15' unit.
- Because most cars fit into a 10' wide unit, most car storage facilities will not note the width on their facility page.
10’ Wide x 20’ Long
- Most cars are less than 20 feet long and will fit comfortably inside a 10'x20' car storage unit.
- This includes SUVs, crossovers, sedans, minivans, pickup trucks, and most full-sized vans.
- Because most cars fit into a 10' wide unit, most car storage facilities will not note the width on their facility page.
10’ Wide x 25’ Long
- Perfect for larger vehicles or a boat.
- Small Class B campers, small Class C campers, travel trailers, toy trailers, and pop-ups may also fit in spaces designed for RV storage.
10’ Wide x 30’ Long
- Very few vehicle models require a 10'x30' storage unit, except for the largest trucks and vans.
- Storage units typically have an 8' to 10' tall ceiling, so if your truck is on larger wheels or on a lift kit, it may be too tall for some units. Always be sure to measure the height of larger cars.
- Because most cars fit into a 10' wide unit, most car storage facilities will not note the width on their facility page.
10’ Wide x 35’ Long
- Store one or multiple vehicles with plenty of other possessions, including furniture and large appliances.
- This size can typically contain large Class B and Class C campers, mid-to-large-sized travel trailers, small-to-mid-sized fifth-wheel campers, large toy trailers, and small Class A campers.
10’ Wide x 40’ Long
- The largest of RVs will fit into a 40' storage space. This includes most Class A campers, large travel trailers, and fifth-wheel trailers.
- Remember that with the added length often comes additional width and height, meaning that many of these extra-large vehicles will require ceilings with a minimum height of 15 feet.
10’ Wide x 50’ Long
- 50' RV storage space will handle the largest of RVs, like large Class A campers, travel trailers, and destination trailers.
- Remember that with the added length often comes additional width and height, meaning that many of these extra-large vehicles will require ceilings with a minimum height of 15 feet.
What Size Storage Unit Is Needed to Store an RV or Boat?
50' Long Units
Most oversized vehicles and RVs will fit into a unit that’s up 50-foot long.
Storage Unit Size FAQs
How tall are storage units?
What is the most popular storage unit size?
What size storage unit do I need to store a few boxes?
What size storage unit do I need for a 1-bedroom apartment?
What size storage unit do I need for a 2-bedroom apartment?
What size storage unit do I need for a 3-bedroom house?
What size storage unit do I need for a 4-bedroom house?
What size moving truck should I get for a 10x10 storage unit?
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