The following link will help you calculate approximately how much space you will need for your items.
Once you have done your calculations, return here and choose the unit that fits your needs.
The SpaceOut Storage Space Calculator provides you with an estimate as to how much storage space you will need. Simply fill in the quantity of each type of article you'd like to store and the calculator will automatically determine your total storage needs.
Note: As the size of individual articles will vary, this calculator provides a rough guide only.