Fit only what the unit’s measured interior can hold while leaving the access and stacking space you need. Start with your largest furniture and appliances, add the boxes and bins, then compare the inventory with the specific facility’s usable floor dimensions and height. Room-count labels and provider examples are useful estimates, not packing guarantees.
What determines how much fits?
A storage unit’s floor area and cubic capacity are different measures. Floor area tells you the available footprint; usable height affects how much you can stack. Public Storage’s size guide lists a 5×5 unit as 25 square feet and 200 cubic feet, and a 10×10 as 100 square feet and 800 cubic feet. Those examples imply eight feet of height, but do not assume every facility has that ceiling or that all of it is usable. Ask for the actual interior dimensions.
Capacity also depends on the shape of your belongings, the way you pack, and whether you need room to reach items. A couch, mattress, appliance, or unusually shaped piece can dictate the layout even when the total volume seems modest. Irregular shapes and interior obstructions can make some advertised capacity difficult to use.
Use size examples as a starting point
Public Storage publishes the following nominal areas, volumes, and household or item examples. The examples are provider estimates, not universal capacities; the company cautions that “Sizes are approximate and may vary by facility.”
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- MOVING SUPPLIES FOR HOME OR BUSINESS – Moving boxes for apartment and house moves, classrooms, offices, and small business relocations. Ideal for packing books, clothing, linens, office supplies, and household goods for moving, storage, or shipping.
- STRONG CORRUGATED BOXES FOR HEAVY ITEMS – Made from 32-ECT corrugated cardboard, supporting up to 65 lbs when properly packed. Helps protect books, kitchenware, tools, and household items during moving, shipping, or storage.
- SAFE FOR DISHES, GLASSWARE & FRAGILE ITEMS – Suitable for packing dishes, glassware, kitchen supplies, collectibles, and breakables when used with packing paper or cushioning. Corrugated construction adds structure and protection during moves.
- EASY TO ASSEMBLE & STORE FLAT – Ships flat to save space before use. Simple fold-and-tape assembly allows quick setup for moving, organizing, shipping, or packing household and business items.
- SUITABLE FOR STORAGE & REUSE – Kraft corrugated boxes can be reused for organizing garages, closets, offices, and storage units. Designed for packing, moving, and storing items in clean, dry environments. Made in the USA and recyclable.
| Nominal size | Area and volume listed by Public Storage | Provider example |
|---|---|---|
| 5×5 | 25 sq ft; 200 cu ft | Closet contents; up to 10 large moving boxes, a twin or full mattress, or a small desk or chair. |
| 5×10 | 50 sq ft; 400 cu ft | Studio-apartment contents; 20+ large moving boxes, around two large furniture pieces, or a twin/queen mattress. |
| 5×15 | 75 sq ft; 600 cu ft | Large-bedroom contents; around 30 large boxes, bedroom furniture, a kitchen table, and luggage. |
| 10×10 | 100 sq ft; 800 cu ft | Two small bedrooms or a living area; around 40 large boxes and large furniture sets. |
| 10×15 | 150 sq ft; 1,200 cu ft | A two-bedroom home; around 60 large boxes and bulky furniture. |
| 10×20 | 200 sq ft; 1,600 cu ft | A three-bedroom home; around 80 large boxes, furniture, and full kitchenware sets. |
Household labels vary across providers. Public Storage associates a 5×15 with a large bedroom, a 10×10 with two small bedrooms, a 10×15 with a two-bedroom home, and a 10×20 with a three-bedroom home. Extra Space Storage lists 5×5, 5×10, or 5×15 as possible sizes for a one-bedroom apartment, and 10×10 or 10×15 for a two-bedroom apartment. The range is a reminder to size from your own inventory rather than from the number of rooms alone.
These values and examples come from provider guides, not an independent capacity study. Verify the local unit dimensions rather than relying on a nominal label; Public Storage’s guide also contains an inconsistent area figure for a 10×25, so that size should be checked directly with the facility.
Rank #2
- FULL-OPEN SIDE ZIPPER — PACK A DORM ROOM IN MINUTES: Unlike standard top-zip moving bags, our full-open side zipper unzips all the way down, so the bag lies completely flat on your bed or floor — just drop in comforters, pillows, and bulky blankets without digging, stuffing, or tilting, and unload just as easily. Lidded Storage Bins.Perfect for college move-in day, apartment moves, and loading your car fast.
- 93L EXTRA LARGE CAPACITY (29" x 14" x 13") — HOLDS UP TO 65 LBS, REPLACES 2+ MOVING BOXES: Each bag measures 29"L x 14"W x 13"H with a massive 93-liter (≈25 gallon) capacity — fits 4 king-size comforters, 36 pairs of jeans, or 60 T-shirts, yet at 56 linear inches it stays within most airlines' 62" checked-baggage size limit. The 6-pack moves a full dorm room or studio apartment in one car load — no more endless cardboard boxes.
- EXTRA HEAVY-DUTY 210 GSM FABRIC + REINFORCED STRAPS — NO RIPPED HANDLES AT 65 LBS: Thick 210 GSM woven fabric with extra-long straps stitched down the sides spreads heavy loads across the whole bag, so handles won't tear mid-stairs even when packed full of books or shoes. Built to be reused move after move, semester after semester — not tossed after one trip like flimsy bags and cardboard boxes.
- TAG POCKET + 6 COLOR-CODED ID CARDS — FIND ANY BAG WITHOUT OPENING IT: Every bag features a built-in tag pocket on the top-right corner — slide in one of the 6 included color-coded ID cards or a written label. Red for winter clothes, orange for shoes, green for bedding, blue for books — no marker scribbles, no guessing, no unzipping every bag to find what you need. A complete organization system exclusive to RMOHRO.
- WATER-RESISTANT & FOLDS TO 1" FLAT — FROM MOVING DAY TO UNDER-BED STORAGE: Coated woven fabric resists moisture, dust, and dirt, protecting your belongings from light rain on loading day and from damp closets or garages during long-term storage. When the move is done, each bag folds flat to about 1 inch thick — slip it under a bed, onto a closet shelf, or keep one in your trunk for the next move, seasonal swap, or camping trip.Lidded Storage Bins.
Estimate your needs before choosing a unit
- Make an inventory. List furniture, mattresses, appliances, and other bulky or awkward possessions separately from items that will go into boxes or bins.
- Measure the largest pieces and containers. Record height, width, and depth. Note items that cannot be turned or stacked easily.
- Decide how much access you need. If you will retrieve belongings regularly, reserve space to move through the unit and reach what is behind or below other items. Tighter packing can use more of the footprint, but makes access harder.
- Plan vertical stacking realistically. Stacking can make better use of height, but requires sturdy boxes and heavier items on the bottom. Do not count on stacking fragile, unstable, or unusually shaped belongings.
- Compare your inventory with the actual unit. Ask the facility for interior floor dimensions and usable height, and account for any obstructions. If the estimate is close, leave room for access and the gaps created by irregular shapes.
When should you choose more space?
Consider the larger of two available options if your largest items leave little room to arrange the rest, you need to reach belongings often, or the smaller unit only works with tight stacking you cannot safely manage. If most of your belongings are consistently sized boxes and you can stack them safely, the footprint may go further than it would with bulky furniture. The right choice depends on the measured items and intended layout—not just the room count printed beside the unit size.
Quick Recap
Best Value
- ULTRA-STRONG 200LB LOAD CAPACITY — Independently tested to support heavy-duty moves. Our signature wrap-around handles encircle the entire bag from bottom to top, creating a structural "cradle" that supports weight from the base. Combined with reinforced stitching, these bags won't snap or tear, even when packed with heavy linens, books, or kitchenware.
- THE SMARTER BOX ALTERNATIVE — Why buy expensive, bulky moving boxes that end up in the trash? One 24-gallon HOMESURE bag provides the same volume as a large box but is far easier to carry over the shoulder. When empty, all 8 bags fold down into a compact stack, saving you a massive amount of storage space in your closet or car trunk.
- COLLEGE DORM MOVE-IN READY — Save time and car space on move-in day. One 24-gallon HOMESURE bag is a dorm room lifesaver. To visualize the space: it fits 2 Twin XL comforters and 1 mattress pad, OR 6 standard pillows, OR 30+ sneakers and an entire semester’s worth of sweaters. It’s the ultimate heavy-duty solution for carrying everything from the trunk to the dorm room.
- INSTANT CONTENT IDENTIFICATION — Stop the "guessing game" on moving day. Each tote features a clear plastic tag pocket. Simply slide in a label to identify "Master Bedroom" or "Garage Toys" in seconds. This small design detail saves hours of unzipping and searching, making your organization system professional and efficient.
- PRO-GRADE PROTECTION — Crafted from high-density, water-resistant woven fabric with smooth #5 dual zippers. These aren't flimsy one-move bags; they are designed for years of reuse. Whether it's light rain during transit or long-term storage in a dusty attic, your clothes and linens stay pristine and protected.
Rank #4
- QUICK AND EASY ASSEMBLY: No tape required, easy to pack and stack, boxes are preprinted with convenient labeling space
- REINFORCED HANDLES: Worry about your move, not your boxes. Reinforced, easy carry handles make it simple to carry and move your boxes
- CONVENIENT LIFT-OFF LID: Quick access to your items when needed, but the lid stays secure while transporting your moving boxes
- RECYCLABLE, STACKABLE, AND REUSABLE: Our strong moving boxes are easier to keep organized in stacks, quick to break down, and store flat until ready to reuse
- MEDIUM SIZE: 19-in x 14.5-in x 15.5-in, the versatile box in our range that works for nearly everything
Rank #3
- 【Extra Heavy Duty】Made of upgraded 180 GMS extra thick coated PE fabric, Fygrip moving bags with fully wrap around handles, strong zipper and reinforced stitching promise to safely hold more than 65 lbs loading.
- 【Extra Large Capacity】Sized at 29"L x 14"W x 13"H, these extra large storage bags offers more than 23 gallon volume, perfect packing bags for the moving of college student.
- 【Easy Packing & Storage】No more hassles to assemble and unpack the moving boxes. These large packing bags features a wide open zipper design, you can easily pack your large bedding right into the bags. And you can also easily folded them after use for easy storage.
- 【Fygrip Comfortable Grip】Equipped with wide webbing handles, it can relieve the burden while carrying by hand or on the shoulder, bringing you a more comfortable using experience.Perfect storage bags storage bins storage totes cubes containers for closet organizers and storage.
- 【No Puncture & Waterproof】These sturdy packing bags are puncture-free and waterproof, they can easily withstand the rough journey of moving, camping, travel, closet organization and storage.
Sources
- Public Storage: Self-Storage Unit Size Guide (accessed October 8, 2026).
- Extra Space Storage: How Big of a Storage Unit Do I Need? (accessed October 8, 2026).
- SelfStorage.com: The Self Storage Size Guide (accessed October 8, 2026).
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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