When you need extra space, the first question is "What size storage unit do I actually need?" It’s easy to guess wrong, end up paying for empty space, or cramming stuff in a unit that’s too small. Below you’ll find a quick, hands‑on way to figure out the right size for your stuff without any guesswork.
Most facilities offer a handful of standard sizes. Here’s a quick cheat sheet:
These numbers are floor space only. Height matters too – most units let you stack up to 8 ft high, so using vertical space can double what you fit.
1. List every item you’ll store. Write down big pieces (sofas, bed frames) and count boxes. For boxes, note the average size – a typical moving box is about 1 ft³.
2. Measure the longest, widest, and tallest dimensions of each large item. Add a few inches for clearance; you don’t want furniture rubbing against walls.
3. Calculate total floor area. Multiply length by width for each piece, then add them together. If the sum is 80 sq ft, a 5x10 unit is too tight – a 10x10 gives you breathing room.
4. Factor in vertical stacking. If you can safely stack boxes and smaller items up to 6 ft tall, you can treat the unit like a three‑dimensional space. A 10x10 unit with 8 ft height can hold roughly 800 cu ft – plenty for a one‑bedroom set.
5. Add a safety margin. Aim for 10‑20 % more space than your calculations. That cushion helps you load and unload without crushing anything.
Once you have these numbers, match them to the closest standard size. If you land between 5x10 and 10x10, go with the larger unit – it’s usually only a little pricier and you’ll avoid the stress of squeezing in.
Here’s a quick example: you have a queen mattress (80 in × 60 in), a couch (84 in × 35 in), five boxes (each 1 ft³), and a dresser (48 in × 20 in). The floor area adds up to about 115 sq ft. A 10x10 unit gives you 100 sq ft, so you’d need a 10x15 to stay comfortable.
Now that you know how to size it, use a few packing tricks to stretch any unit further. Disassemble bed frames, use uniform plastic bins that stack evenly, and place heavy items on the floor while lighter boxes go on top. Label every box so you can pull out just what you need later without digging through piles.
Choosing the right storage unit size doesn’t have to be a gamble. Measure, calculate, and add a little wiggle room. With the right size, you’ll save money, protect your belongings, and keep the moving day stress low.
Curious about what a 5x10 storage room looks like? This article breaks down its exact size, capacity, and what you can realistically store inside. No more guessing games—see real-life examples, organization hacks, and what to look for before renting. Get tips on packing, layout, and saving money. Perfect for anyone downsizing, moving, or just running out of space at home.