Container Sizes Guide

Size	Interior (L×W×H)	Approx. capacity	Best for
10ft mini	9'3" × 7'8" × 7'10"	~560 cu ft	Tight lots, single-item storage
20ft standard	19'4" × 7'8" × 7'10"	~1,170 cu ft	Home storage, small business inventory
40ft standard	39'5" × 7'8" × 7'10"	~2,390 cu ft	Full households, bulk materials
40ft high-cube	39'5" × 7'8" × 8'10"	~2,700 cu ft	Conversions, offices, extra headroom

Exact interior dimensions vary slightly by manufacturer and condition — a well-used container may have a dented rail or two — so treat these as reliable planning numbers rather than a guarantee down to the inch.

10ft mini container

The 10ft is the size people underestimate. It will not hold a household, but it is the right call when space is genuinely tight: a narrow side yard, a small commercial lot, or anywhere a 20-footer simply will not fit. Common Houston uses are pool equipment and yard tools, a single vehicle's worth of spare parts, or seasonal stock for a business.

20ft standard container

The most-ordered size in Houston, and for good reason. It is roughly the volume of a one-car garage, small enough to place on most residential lots without a permit fight, and large enough to actually matter. It is the default for homeowners storing furniture during a remodel, contractors keeping tools secured on a smaller jobsite, and small businesses that need lockable inventory space without leasing a warehouse bay.

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40ft standard container

Double the length of a 20ft at the same width. This is the size for a full household move into storage, a contractor staging materials for a larger build, or a business consolidating several smaller units into one. It needs a bigger delivery footprint and a longer flatbed to place, so measure your access — gate width, overhead lines, turning radius — before ordering.

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40ft high-cube container

Same footprint as a standard 40ft, but a full foot taller inside. That extra foot is exactly what you need if you are insulating and finishing the interior for a backyard office, studio or workshop, since a standard 7'10" ceiling disappears fast once you add framing, insulation and a finished ceiling. If a conversion is the goal, start with a high-cube rather than retrofitting a standard box.

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Which size should you buy?

The practical test: measure what you are storing, add about 20% for aisle space and imperfect packing, then compare against the capacity column above. If you land between two sizes, go up — nobody has ever complained about having too much dry, lockable storage, and the price gap between a 20ft and a 40ft is far smaller than the gap in usable space.