Don't know what size self storage unit you need? Use our self storage unit size calculator to find the right size unit for you business and personal self storage needs. Estimate what size storage unit you may need by entering what you intend to store. Our calculator is designed to give you the most efficient result and we encourage you to make the best use of the ceiling height in your storage unit. If you have any questions, our expert managers are happy to you a tour of any of our available units as well as proper ways to store you goods and items to get the most our of the storage space.