Self Storage Size Guide


The below sizing guide will help you get a better idea of how much space you need. In general, we recommend 50 square feet of storage for every room of furniture you'd like to store. Don't worry if you can't choose between two similar sizes—just rent the space you think works best, and if you need another size, we'll adjust your reservation with no problem!
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  • Locker size unit
  • Five foot by five foot unit
  • Five foot by ten foot self storage unit
  • Five foot by fifteen foot self storage unit
  • Ten foot by ten foot self storage unit
  • Ten foot by fifteen foot self storage unit
  • Ten foot by twenty foot self storage unit
  • Ten foot by twenty five foot unit
  • Ten foot by thirty foot unit
  • Ten foot by forty foot unit
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  • Room Size
    Locker
    Height
    ~4 ft
    Width
    5 ft
    Depth
    5 ft
    Similar to a telephone booth or small cupboard.
  • Room Size
    25 SqFt
    Height
    8-10 ft
    Width
    5 ft
    Depth
    5 ft
    Comparable to a walk-in closet.
  • Room Size
    50 SqFt
    Height
    8-10 ft
    Width
    5 ft
    Depth
    10 ft
    Similar to the size of a large garden shed.
  • Room Size
    75 SqFt
    Height
    8-10 ft
    Width
    5 ft
    Depth
    15 ft
    Fits the contents of a box truck / 1-bed apartment.
  • Room Size
    100 SqFt
    Height
    8-10 ft
    Width
    10 ft
    Depth
    10 ft
    Suitable to store a 2-bedroom apartment / house.
  • Room Size
    150 SqFt
    Height
    8-10 ft
    Width
    10 ft
    Depth
    15 ft
    Size of a single garage, can store a 2 bedroom house.
  • Room Size
    200 SqFt
    Height
    8-10 ft
    Width
    10 ft
    Depth
    20 ft
    Fits the contents of a 7.5 ton truck / 3-bed house.
  • Room Size
    250 SqFt
    Height
    8-10 ft
    Width
    10 ft
    Depth
    25 ft
    Size of a double garage, stores a 4-bed house.
  • Room Size
    300 SqFt
    Height
    8-10 ft
    Width
    10 ft
    Depth
    30 ft
    Fits the contents of a 30 ft truck.
  • Room Size
    400 SqFt
    Height
    8-10 ft
    Width
    10 ft
    Depth
    40 ft
    Ideal for business storage or a large household.

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What Fits in a Storage Unit?

Small (25 – 50 Sq. Ft.)

About the size of a small, half bathroom. Great for storying one room of small furniture.

  • Small furniture
  • Twin mattress
  • Dresser
  • Seasonal decor
  • Boxes
Works well for a car, small truck, or SUV load.

Medium (81 to 150 Sq. Ft.)

This is the size of an average bedroom. Good for two rooms of furniture or a one bedroom house.

  • Appliances
  • Table & chairs
  • Bedroom set
  • Sports & outdoor equipment
  • Living room furniture
Works well if you have a 6 x 12 trailer or 10 x 10 moving truck.

Large (151 to 300 Sq. Ft.)

This is the size of an average one car garage or living room. Perfect for larger two bedroom homes, or if you have appliances you need to store.

  • Washer/dryer set
  • Multiple bedroom sets
  • Couch & loveseat
  • Large appliances
  • One car or truck
Works well for 20' to 24' truck loads.

Extra Large (301 Sq. Ft. and up)

This about the size of a two car garage. Ideal for large two to three bedroom homes with appliances and boxes.

  • A car or truck + a room of furniture
  • Antiques
  • Refrigerator
  • Multiple bedroom sets
  • Couch, loveseat, and chairs
Ideal if you're moving a truck & trailer combo or have a 40' moving van.

Parking (18 to 38 Ft. deep)

Parking spaces large enough to accommodate your car, truck, boat, or RV. Rent space for your trailer, jet skis, or RTVs. Learn more about how storing your RV at StorageMart can help keep your vehicle safe during inclement weather. 

Rent parking spaces for your company trucks, vans, and other company vehicles, with 24-hour access available for your convenience.
Sizes are approximate. Please inspect your unit and ensure the space you rent meets your needs. Storage unit accommodation ability will vary based on the size of your contents and belongings.