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Storage Unit Size Calculator

Watch this quick video guide for a general idea of our storage unit sizes:


How much space do you need to safely store your belongings in self storage? For those who are new to renting storage, it can be tricky to figure out the ideal amount of square feet to securely hold all your items without getting too much. There is no need to pay for more than you need. Check out the Stack-N-Stor storage unit size guide below to see what kinds of items will fit into each size category!

storage unit size guide

Self Storage Unit Size Guide

Small Storage Units

  • Looking to store approximately the contents of a one room? Small storage units are your go-to for lighter loads. Think of them as about the size of a walk-in closet. They are cost-efficient options and perfect for storing seasonal items, like holiday decorations and winter clothing. You do have to be careful about double-checking measurements before attempting to fit in a larger-sized mattress or other pieces of furniture. 

Medium Storage Units

  • If a small storage unit can hold about one room’s worth of items, consider a medium storage unit to hold about two to three rooms’ worth. You have far fewer sizing restrictions and have enough space for up to a king-sized bed. Rent a medium storage unit to help you move apartments or store your belongings during renovations.

Large Storage Units

  • For the contents of a three-plus bedroom home, you will want to go big. Pack in all your beds, mattresses, indoor and outdoor furniture sets, and appliances during a move to keep it all secure. Households and businesses alike can find extra space close them with our affordable warehouse alternatives. If you are storing a particularly large load, drive-up storage units are beneficial for keeping heavy lifting to a minimum. Explore your different storage options with Stack-N-Stor!

Stack-N-Stor’s Storage Calculator


Our storage unit size calculator can help you determine what size unit would be best for your needs. Using the form below, tell us what you need to store and our calculator will provide an estimate in cubic feet as well as the storage size you’ll need. We’ll calculate the size and recommend a unit based on the space needed.


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Storage calculator is for conceptual purposes only. Unit and item sizes are approximate and may vary. Item dimensions are based on common sizes and may vary. Powered by ClickandStor®