Storage unit size guide — 5×5 to 10×30 with real-world fits
Storage units are sized by their floor footprint: width × depth, in feet. The sizes below are the industry standards you'll see at every major facility — Public Storage, Extra Space, CubeSmart, and the thousands of independents we aggregate.
Sizes at a glance
| Size | Sq ft | Best for |
|---|---|---|
| 5×5 | 25 sq ft | Fits a closet — boxes & small items |
| 5×10 | 50 sq ft | Fits a small bedroom |
| 5×15 | 75 sq ft | Fits 1 bedroom + extras |
| 10×10 | 100 sq ft | Fits 1–2 bedrooms |
| 10×15 | 150 sq ft | Fits 2–3 bedrooms |
| 10×20 | 200 sq ft | Fits 3–4 bedrooms or small garage |
| 10×25 | 250 sq ft | Fits 4–5 bedrooms |
| 10×30 | 300 sq ft | Fits full garage / small warehouse |
Real-world fits, by size
5×5
25 sq ft · 5×5 ftFits a closet — boxes & small items
- •Small dresser
- •~10 medium boxes
- •Seasonal clothes
- •A few mounted bikes
5×10
50 sq ft · 5×10 ftFits a small bedroom
- •Twin or queen mattress + frame
- •~25 medium boxes
- •Couch + chairs from a studio
- •A motorcycle (with room for boxes)
5×15
75 sq ft · 5×15 ftFits 1 bedroom + extras
- •1 bedroom of furniture
- •Small couch + dining set
- •~40 medium boxes
- •Plus a few outdoor items
10×10
100 sq ft · 10×10 ftFits 1–2 bedrooms
- •1–2 bedroom apartment
- •Sectional couch + bedroom set
- •Major appliances + boxes
- •Most-popular size by rental volume
10×15
150 sq ft · 10×15 ftFits 2–3 bedrooms
- •2–3 bedroom apartment
- •Couch + dining set + 2 bedrooms
- •~75 medium boxes
- •Workshop tools + toolbox
10×20
200 sq ft · 10×20 ftFits 3–4 bedrooms or small garage
- •Single-car garage worth of stuff
- •3–4 bedroom home
- •Vehicle (compact car or motorcycle)
- •Plus seasonal/outdoor gear
10×25
250 sq ft · 10×25 ftFits 4–5 bedrooms
- •4–5 bedroom home
- •Larger SUV + room for boxes
- •Workshop + small business inventory
- •Boats up to ~22 ft
10×30
300 sq ft · 10×30 ftFits full garage / small warehouse
- •Full two-car garage
- •Pickup truck + furniture
- •Small-business commercial stock
- •Boats up to ~28 ft
Frequently asked questions
What is the most common storage unit size?
The 10×10 (100 sq ft) is the single most-rented unit size — it fits a 1–2 bedroom apartment's worth of furniture, including a sectional couch and a queen bed, plus appliances.
How do I know what size storage unit I need?
Match by volume of your largest item: a 5×5 fits a closet, a 5×10 fits a small bedroom, a 10×10 fits 1–2 bedrooms, a 10×20 is one car-garage-sized, and a 10×30 is two car-garage-sized. When in doubt, size up — units fill faster than you think.
Do storage units come in custom sizes?
Most facilities stock the standard sizes above. Some larger campuses also offer 5×7, 8×10, 10×12, and oversized commercial units. Filter by size on the search page to see what is available near you.
Find storage in your city
Now that you know what size you need, see live rates near you.