🗄️ Storage Unit Size Calculator
Select the number of rooms worth of belongings you need to store to get a recommended storage unit size.
Rooms mapped to a unit size
The tool steps through five thresholds and returns the first one your room count fits under:
| Rooms | Unit | Floor | Volume at 8 ft |
|---|---|---|---|
| 0 - 1 | 5 x 5 | 25 sq ft | 200 cu ft |
| 2 | 5 x 10 | 50 sq ft | 400 cu ft |
| 3 | 10 x 10 | 100 sq ft | 800 cu ft |
| 4 | 10 x 15 | 150 sq ft | 1,200 cu ft |
| 5 or more | 10 x 20 | 200 sq ft | 1,600 cu ft |
Above the first step each extra room is worth 50 sq ft, and the count is capped at 10 rooms - beyond a 10 x 20 you are into two units or a different conversation. Entering 0 still returns a 5 x 5 rather than nothing.
Volume is what you are really buying
Storage is sold by floor area but filled by the cubic foot, so the ceiling height decides the answer as much as the footprint. Most units are 8 ft; some run to 10, which is a quarter more space at the same monthly price. A 10 x 10 at 800 cu ft takes roughly what a 15 ft truck carries, but only if you stack to the roof.
Frequently asked questions
What size storage unit do I need for a 2 bedroom apartment?
A 10 x 10 holds a typical two-bedroom - beds, sofa, dining set, appliances and the boxes. Drop to a 5 x 10 if you are storing furniture but keeping the appliances.
How much fits in a 10x10 storage unit?
About 800 cubic feet, which is three rooms of furniture stacked to the ceiling or the load of a 15 ft truck. With an aisle down the middle, plan on 600.
Do I need a climate controlled unit?
Only for wood furniture, electronics, instruments, photographs and anything upholstered, and only if the store is hot or damp. It costs 25 to 50 percent more, so a garage clear-out rarely justifies it.