What Size Storage Unit Do I Need for a Queen Bed?
A queen mattress measures 60 x 80 inches, which is the awkward size for storage: too big to lie flat in a small unit, fine on its edge but only if supported properly. Here is the practical answer, including what happens when the rest of the bedroom comes along.
Direct answer
Rent a 5x10 storage unit for a queen bed. The mattress, box spring, disassembled frame, and headboard all fit with space left for a dresser and several boxes. A 5x5 unit technically fits a queen mattress standing on its long edge, but it is tight, leaves little room for anything else, and makes proper mattress support harder.
The size math
| Unit size | Floor space | Queen bed verdict |
|---|---|---|
| 5x5 | 25 sq ft | Mattress on edge only - tight, nothing else fits |
| 5x10 | 50 sq ft | Mattress, frame, headboard, dresser, and boxes |
| 10x10 | 100 sq ft | The whole bedroom plus another room's contents |
Check the unit's ceiling height too: most are 8 ft, so an 80-inch queen mattress stands upright with a few inches to spare. Some older facilities have lower ceilings - ask before booking a 5x5.
How to store a mattress without ruining it
- Flat is best, upright is acceptable. Long-term storage flat on a level surface preserves the internals; on its edge, support the mattress so it cannot sag into a curve.
- Use a breathable mattress bag. A cover keeps dust and moisture off; fully sealed plastic can trap humidity and encourage mildew in non-climate units.
- Nothing stacked on top. Boxes on a flat mattress create permanent dips - if floor space is tight, that is the sign you need the 5x10, not the 5x5.
- Consider climate control for 6+ months. Memory foam in particular suffers in temperature swings.
Storing the whole bedroom?
A queen bedroom set - bed, two nightstands, dresser, mirror, and 10-15 boxes - fills a 5x10 unit almost exactly. If you are storing that plus anything from another room, step up to a 10x10. For a full inventory-based estimate, use the Storage Unit Size Calculator.
Use the Storage Unit Size Calculator
Frequently asked questions
Will a queen bed fit in a 5x5 storage unit?
The mattress alone will, standing on its long edge, but it is tight and leaves almost no room for the frame or anything else. A 5x10 is the practical choice.
What size storage unit fits a king bed?
Also a 5x10, but with less spare room - a king mattress is 76 x 80 inches. A king bedroom set with dresser and boxes often needs a 5x15 or 10x10.
Is it OK to store a mattress on its side?
For a few months, yes, if it is supported so it stays flat and cannot slump. For long-term storage, flat is better, especially for memory foam and pillow-top mattresses.
Do I need climate-controlled storage for a mattress?
For storage beyond about six months, or in humid climates, it is worth the upcharge. Humidity is the main cause of mildew and odor in stored mattresses.