StowSignal

Free sizing tool

Storage unit size calculator

Get a practical starting size from the things you plan to store. This is an estimate, not a substitute for checking the actual unit dimensions and access route.

Quick estimate

How much are you storing?

Adjust the three estimates, then calculate. No email or phone number required.

Fit check

Before reserving the unit

  1. 1. Measure the largest item. Confirm it clears the unit door, hallway turns, and elevator.
  2. 2. Decide what can stack. Fragile, upholstered, or frequently accessed items reduce usable height.
  3. 3. Leave an aisle. Add space if you will retrieve items before moving everything out.
  4. 4. Verify the real dimensions. A “10 × 10” label can be approximate; ask for the facility’s measured dimensions.