How is the recommended size calculated?

Each room type has a typical furniture volume estimate. The tool sums all selected rooms and items, adds a 15% buffer for boxes and awkward stacking, then maps the total to the nearest standard unit size.

What are standard storage unit sizes?

Common sizes are 5x5 (25 sq ft), 5x10 (50 sq ft), 10x10 (100 sq ft), 10x15 (150 sq ft), 10x20 (200 sq ft), and 10x30 (300 sq ft). Ceiling height is typically 8–10 feet.

Should I rent a bigger unit than recommended?

Going one size up is rarely wasted. A larger unit lets you stack items safely, leave a walking aisle, and add more belongings later without renting a second unit.

Does this account for stacking boxes?

The estimate assumes you can stack items 6–7 feet high on average, which is realistic for most storage units. Fragile items that cannot be stacked will need more floor space.

What fits in a 10x10 unit?

A 10x10 unit (100 sq ft) comfortably holds the contents of a one-bedroom apartment: a queen bed, sofa, dining set, dresser, and roughly 20–25 medium boxes.

Can I store a car or truck?

Yes. A standard car needs a 10x20 unit; a pickup truck or SUV typically needs a 10x25 or 10x30. Make sure the facility offers drive-up access for vehicle storage.

Storage Unit Size Calculator

Name: Storage Unit Size Calculator
Availability: InStock
Author: Nham Vu

Enter your rooms or large items and instantly get the recommended storage unit size with a visual comparison of standard unit dimensions.

Rooms to Store

Large Items (optional)

Recommended Unit

Add at least one room or item on the left to see a recommendation.

Standard Unit Sizes

Size	Sq Ft	Fits

Packing tips for storage

Disassemble furniture (bed frames, tables) to save floor space.
Stack boxes to the ceiling and leave a center aisle for access.
Store items you use most frequently near the door.
Use shelving units to maximize vertical space in larger units.

Summary

Enter your rooms or large items and instantly get the recommended storage unit size with a visual comparison of standard unit dimensions.

How it works

Select room types you plan to store (bedroom, living room, kitchen, etc.).
Add individual large items like appliances or vehicles if needed.
The calculator totals your estimated cubic feet of belongings.
A recommended unit size appears with standard dimensions.
Compare nearby unit sizes to choose the best fit for your budget.

Use cases

Determine what size unit to rent before visiting a storage facility.
Estimate storage costs when planning a home renovation.
Downsize from a house to an apartment and store excess furniture.
Store seasonal items, sports equipment, or business inventory.
Plan storage during a long-distance move or military deployment.
Compare unit sizes when choosing between two facilities.

Frequently Asked Questions

Last updated: 2026-07-22 · Reviewed by Nham Vu