Right Size Guide
Storage Unit Size Calculator
This storage unit size calculator helps you estimate what size storage unit you may need based on your home size, boxes, furniture, appliances, and how full you plan to pack the space.
Quick Calculator
Find The Right Storage Unit Size
Enter what you plan to store and the calculator will estimate the square feet you may need, then suggest a common storage unit size to consider.
Storage Unit Size Calculator
Enter your items, home size, furniture, and storage style.
Your Storage Unit Size Results Will Appear Here
Add your items, choose your storage needs, and click calculate.
Before You Rent
How To Estimate Storage Unit Size
The right storage unit size depends on more than square footage. Boxes, furniture, appliances, mattresses, business inventory, and how often you need access all affect the size you should choose.
Visual Guide
Storage Unit Size Guide
Use this storage unit size infographic as a quick visual guide for comparing common unit sizes, room estimates, and what may fit inside each space.
Storage Fit Guide
Common Storage Unit Sizes
These are general planning ranges. Always check the storage facility’s actual unit dimensions, ceiling height, door width, access rules, and climate-control options before renting.
| Storage Unit Size | Approx. Square Feet | Often Used For |
|---|---|---|
| 5×5 | 25 sq ft | Small boxes, seasonal decor, small furniture, personal items |
| 5×10 | 50 sq ft | Studio items, mattress set, small sofa, several boxes |
| 10×10 | 100 sq ft | One to two rooms of items, appliances, dining set, many boxes |
| 10×15 | 150 sq ft | Two to three rooms, large furniture, appliances, business inventory |
| 10×20 | 200 sq ft | Three to four rooms, larger household storage, small vehicle storage |
| 10×30 | 300 sq ft | Large household storage, four to five rooms, business storage, vehicle storage |
Storage unit sizes and what fits inside can vary by facility, so use this calculator as a planning estimate and confirm the exact unit details before renting. For another helpful reference, U-Haul has a self-storage unit size guide that explains small, medium, and large storage unit options. View U-Haul’s storage unit size guide.
Simple Rules
How To Choose A Storage Unit Without Overthinking It
A good storage unit should fit your items safely while still giving you enough space to stack, protect, and access what you need.
Short-Term Storage
A tighter fit may work if you are storing items briefly and do not need frequent access.
Long-Term Storage
Choose a little extra room so boxes are easier to organize and delicate items are not crushed.
Frequent Access
Size up if you need a walkway, shelves, labels, or room to reach items near the back.
Common Questions
Storage Unit Size Calculator FAQs
What Size Storage Unit Do I Need?
The right storage unit size depends on how many boxes, bins, furniture pieces, appliances, and bulky items you need to store. A few seasonal items may fit in a 5×5 unit, while a full household may need a 10×20 or 10×30 unit.
What Fits In A 5×10 Storage Unit?
A 5×10 storage unit may work for studio apartment items, several boxes, a mattress set, small furniture, or seasonal storage. The exact fit depends on how well items can be stacked and packed.
What Fits In A 10×10 Storage Unit?
A 10×10 storage unit is often used for one to two rooms of items, including boxes, small appliances, furniture, and household belongings.
Should I Size Up My Storage Unit?
If you have bulky furniture, fragile items, frequent access needs, or uncertainty about box count, sizing up can make the storage unit easier to organize.
Do I Need Climate-Controlled Storage?
Climate-controlled storage may be helpful for furniture, electronics, documents, photos, wood items, and belongings that could be affected by temperature or humidity.