Quick Answer: A high cube shipping container is 9 feet 6 inches tall on the outside with 8 feet 10 inches of interior headroom, per the Container Handbook (GDV). A standard container is 8 feet 6 inches outside with 7 feet 10 inches inside. The extra foot adds about 13 percent more volume. High cube wins for conversions, tall cargo, and reefers. The LeBlanc family has run Van Blanc Ent. Inc. since 1995, with 124+ verified Google reviews at 4.9 stars and 1-3 day Ontario delivery.
In This Guide
- What are the exact dimensions side by side?
- What drives the high cube price difference?
- When is a high cube worth the extra foot?
- When does a standard container still win?
- What ceiling height is left after a conversion?
- What about the 20 ft high cube?
- Which container type fits each industry?
- Frequently Asked Questions
Reading Time: 13 minutes
Most container buyers in Ontario eventually run into the same question. Should I pay extra for a high cube, or will a standard container do the job. The honest answer depends on what you are actually going to put in it, what you are going to do to it, and whether you are loading cargo by weight or by volume. This article walks through the real differences, with the dimensions that matter, what moves the price in Canadian dollars, and the practical thresholds where the extra foot pays for itself.
Both standard and high cube containers are built to the same ISO 6346 specification. Both have the same 8 foot width. Both come in 20 foot and 40 foot lengths. The only structural difference is one foot of exterior height. That single foot changes the use case profile more than anyone expects.
What Are the Exact Dimensions of a High Cube vs a Standard Container?
A high cube container is 9 feet 6 inches tall externally and 8 feet 10 inches internally. A standard container is 8 feet 6 inches externally and 7 feet 10 inches internally. Both share the same 8 foot width and the same 20 foot or 40 foot length, so the entire difference is one foot of height, inside and out.
Here are the numbers in metric and imperial, because Canadian buyers use both.
| Dimension | Standard 40ft | 40ft High Cube | Difference |
|---|---|---|---|
| Exterior length | 40 ft (12.19 m) | 40 ft (12.19 m) | Same |
| Exterior width | 8 ft (2.44 m) | 8 ft (2.44 m) | Same |
| Exterior height | 8 ft 6 in (2.59 m) | 9 ft 6 in (2.90 m) | +1 ft (+0.31 m) |
| Interior length | ~39 ft 5 in (12.03 m) | ~39 ft 5 in (12.03 m) | Same |
| Interior width | ~7 ft 8 in (2.35 m) | ~7 ft 8 in (2.35 m) | Same |
| Interior height | 7 ft 10 in (2.39 m) | 8 ft 10 in (2.69 m) | +1 ft (+0.30 m) |
| Interior volume | 67.7 m³ (2,390 cu ft) | 76.3 m³ (2,694 cu ft) | +8.6 m³ (+13%) |
| Tare weight (empty) | ~3,800 kg (8,380 lb) | ~4,000 kg (8,820 lb) | +~200 kg (+440 lb) |
| Max gross weight | 30,480 kg (67,200 lb) | 30,480 kg (67,200 lb) | Same |
| Door opening height | 7 ft 5 in (2.28 m) | 8 ft 5 in (2.58 m) | +1 ft (+0.30 m) |
Paul LeBlanc, Van Blanc owner: “People think the foot is the whole story. It is, until you put a forklift in front of the doors. Then the door opening number is what saves you, and a lot of buyers never look at it until the pallet will not fit. In my nineteen years in containers, that one measurement has settled more arguments in the yard than any other.”
If you want the full dimensional picture across every length and grade, our walkthrough of standard and high cube measurements lays out each ISO size in one place. For the headroom comparison here, the door opening line in the table above is the one most buyers overlook.
What the Door Opening Number Actually Tells You
The door opening is shorter than the interior ceiling because the door frame eats some height. On a standard 40 footer, you have 7 feet 5 inches of clear height through the doors. On a high cube, you have 8 feet 5 inches. If you are forklifting tall pallets in, this is the number that matters, not the interior ceiling height. The difference of one foot at the door opening is the difference between getting a pallet of stacked pump motors through cleanly and getting stuck.
The 20 foot versions of both standard and high cube exist on the same logic, with the same one-foot height difference. A 20 foot standard is 8 feet 6 inches tall and a 20 foot high cube is 9 feet 6 inches tall. The trade-offs between the shorter and longer footprint explain why the 20 foot HC is less common in inventory than the 40 foot HC. Most buyers who need height also need the volume of a 40.
What Drives the High Cube Price Difference?
The high cube price difference is driven by grade, the base container price, the size you choose, and the steel market on the day you order, not by a fixed percentage you can read off a chart. A high cube uses the same footprint as a standard but adds a foot of steel and a touch more tare weight, so it sits a step above the matching standard unit. How big that step feels depends almost entirely on the grade underneath it.
| Grade | What you are getting | What moves the high cube step |
|---|---|---|
| 40 ft, one-trip (new) | Single voyage, near-new condition, longest service life | Highest base, so the headroom upgrade is the smallest share of the total |
| 40 ft, cargo worthy (CW) | Certified structurally sound for ongoing shipping use | Mid base; the step tracks current used-stock supply |
| 40 ft, wind & watertight (WWT) | Sealed against weather, ideal for static storage | Lowest base, so the dollar gap to high cube is at its narrowest |
The Used HC Sweet Spot
On lower-grade used 40 footers, the dollar gap between a standard and a high cube is at its narrowest, because the base price is lower to begin with. That makes the extra cubic capacity, plus the conversion-friendly headroom, one of the cheapest upgrades in the whole container market. If your use case has any chance of evolving into a conversion (office, workshop, secure tool storage with shelving), the spread is usually worth paying. Tell us the grade and your postal code and we will put a real number on it.
For a fuller picture of what sets any quote, our rundown of what actually moves a container quote in Canada covers grade, delivery distance, season, and the steel market in one place. Delivery and freight cost is the same for both heights. The 200 to 400 pound weight difference does not change trucking, because both are well inside the standard tilt-deck and flatbed weight limits.
When Is a High Cube Container Worth the Extra Foot?
A high cube container is worth the extra foot whenever you are converting it, refrigerating it, or loading something tall. In those cases the headroom is not a luxury, it is the thing that makes the container usable. Here are six scenarios where the extra foot pays for itself.
1. Container Office or Workshop Conversion
This is the most common reason to spec a high cube in Ontario. Once you add spray foam insulation to R-25 (about 2 to 3 inches), a plywood subfloor (about 1.5 inches), interior wall panels, and a drop ceiling for lighting, you have eaten roughly 5 to 6 inches of interior height. A standard container’s 7 foot 10 inch ceiling drops to about 7 foot 4 inches finished. A high cube starts at 8 foot 10 inches and finishes at roughly 8 foot 4 inches, which feels like a normal room instead of a low basement. If a build-out like this is on your horizon, our yard conversion and fit-out program handles the venting, insulation, doors, and interior work before delivery.
2. Refrigerated Containers (Reefers)
Reefer containers are almost always high cubes because the refrigeration unit, insulation, and floor system collectively eat about 7 to 8 inches of interior height. A standard reefer would leave less than 7 feet of usable interior. The 40 foot high cube reefer is the industry default for food, brewery, greenhouse, lab, and pharma cold storage. We stock these because they are what most Canadian cold-storage buyers actually need.
3. Tall Equipment or Stacked Pallets
If you are storing or shipping standard 48 by 40 inch pallets stacked two high to a height of 7 feet or more, the standard container’s 7 foot 5 inch door opening can become a problem. The high cube’s 8 foot 5 inch door opening swallows the same load with a foot of clearance. Same logic for tall machinery, large industrial fans, printing presses, refrigerators in a moving load, or anything where vertical dimension is the constraint.
4. Container Cabin or Backyard Studio
The same logic as office conversion. Once you frame walls, run electrical, add insulation, and ceiling finish, a high cube leaves you with normal residential headroom. A standard leaves you with a low basement. For a backyard studio, container home addition, or cottage workshop where you spend hours inside, that one foot is the difference between a space you want to be in and a space you tolerate. If you are still deciding between a container and a built shed for that backyard role, our comparison of a steel box against a built shed walks through the durability and security trade-offs.
5. Mining or Construction Site Bunkhouse
Northern Ontario mining and forestry operations almost always specify 40 foot high cube for site-office and bunkhouse units. The insulation requirement is heavier (R-30 or more for minus-40 winters), the ceiling height after build-out has to be habitable, and the operator wants the option of a drop ceiling for ductwork. High cube is the default at this scale.
6. Hay Storage or Volume-Constrained Farm Use
For farm storage where you are stacking round bales upright or storing tall equipment, the extra cubic foot of volume per dollar of container is a clear win. The high cube holds about 13 percent more volume on the same ground footprint, and on used grades the price step over a standard is modest. That works out to slightly cheaper storage per cubic foot than a standard, plus the headroom for tall items.
When Does a Standard Container Still Win?
A standard container still wins when you are loading dense heavy cargo, when the budget is tight on pure outdoor storage, or when the delivery site has a low overhead clearance. The standard is not obsolete. There are real cases where it is the right choice.
Dense Heavy Cargo
If you are loading metal goods, machine parts, or any cargo where weight maxes out before volume does, the standard’s 200 to 400 pound lighter tare weight gives you that much more useful payload before you hit the 30,480 kg gross limit. For most freight, this is academic. For dense industrial loads (steel coils, machinery, metal stock, ammunition crates), it matters.
Budget-Driven Outdoor Storage
If your use case is straightforward outdoor storage on a farm, a contractor yard, or a property where the container will live for the next 20 years storing standard-height equipment and supplies, and you do not anticipate converting it, the standard saves you the high cube step. Depending on grade, that is real money you can keep.
Low-Clearance Delivery Sites
Some delivery sites have low overhead clearances, low overhanging tree branches, low garage doors, or power-line crossings that limit the height a tilt-deck can pass under cleanly. A standard at 8 feet 6 inches will sometimes clear a site where a high cube at 9 feet 6 inches will not. Site-survey first, especially for residential and cottage deliveries with mature trees overhead.
What Ceiling Height Is Left After a Container Conversion?
After a full container conversion, a standard container leaves you roughly 7 ft 0 in to 7 ft 4 in of finished ceiling, while a high cube leaves roughly 8 ft 0 in to 8 ft 4 in. That finished height, not the raw interior ceiling, is the single most useful number for any buyer thinking about turning a container into a usable space.
Finished Ceiling Math, Real Numbers
Start with the raw interior ceiling. Standard: 7 ft 10 in. High cube: 8 ft 10 in. Subtract for build-out:
- R-25 spray foam ceiling insulation: about 2 inches
- Plywood subfloor: about 1.5 inches
- Drop ceiling for lighting and wiring: about 4 inches (optional)
- Vapour barrier, drywall ceiling, finished trim: about 1 inch
Finished ceiling height on a standard container, with all of the above, lands at roughly 7 ft 0 in to 7 ft 4 in. Finished ceiling on a high cube lands at roughly 8 ft 0 in to 8 ft 4 in. A finished standard barely clears that. A finished high cube is normal residential.
If a conversion is where you are headed, the headroom you start with decides how the finished space feels. The range of builds that fit inside a high cube, from offices to retail to bar units, is covered in our look at what a steel box can become after a fit-out. A high cube costs a step more on day one and pays it back every day you stand up straight inside it.
Christian LeBlanc, Van Blanc: “Anyone who has spent a winter inside a converted standard knows. The headroom is fine when you walk in, but you remember it every time you reach overhead. The only buyers who never regret choosing high cube are the ones storing things, not living or working inside. I grew up listening to my dad walk people through this in the yard, and the conversation has not changed in twenty years.”
What Is a 20 ft High Cube and When Should You Order One?
A 20 ft high cube is a short container with full high cube height: the same 9 foot 6 inch exterior and 8 foot 10 inch interior as a 40 foot HC, just over a 20 foot footprint. You should order one when you need conversion-friendly headroom but do not have room for a 40, which is a narrower buyer profile than either common size, so it is rarer in Canadian inventory.
The first reason it is rarer is that the shipping industry that manufactures one-trip containers tends to allocate high-cube production toward the 40 foot length, which is where the volume premium pays off most cleanly. The 20 foot HC is a lower-volume order from container yards in Asia, so the available used inventory in Canada is thinner. The second reason is buyer behaviour. Most buyers who need a small footprint do not also need extra height. Most buyers who need extra height want the additional cubic capacity of a 40 footer. The 20 foot HC sits in the gap between those two profiles.
There are real use cases for it. A short residential lot with no room for a 40 foot container but a buyer who wants conversion-friendly headroom. A construction site with a tight access driveway. A small backyard workshop where 20 feet of length is plenty. A modular building project where multiple 20 foot HCs are stacked or coupled for a larger combined floor plan. When the use case is right, a 20 foot HC is the only correct answer.
If You Are Hunting a 20 ft HC
Expect longer lead times than the more common sizes. Inventory turnover is slower because the unit is less commonly ordered. The price step over a 20 foot standard tends to be smaller than the step a 40 foot HC carries, because the cubic-volume math is less dramatic on a shorter container. Call us in Brantford if you need one. We can often source from network inventory within a week or two when our yard does not have one on hand.
Which Container Type Fits Each Industry?
The right container type by industry comes down to whether the job needs headroom or payload: conversions, cold storage, and tall cargo lean high cube, while dense weight-limited freight and budget outdoor storage lean standard. Here is the practical answer, drawn from what Van Blanc actually delivers across Ontario.
| Industry / Use | Recommended Type | Why |
|---|---|---|
| General farm storage (equipment, feed, supplies) | Either; standard if budget-tight | 7 ft 10 in handles most farm gear |
| Hay storage, round bales upright | High cube | Bales stack better with the extra foot |
| Cold storage, food, brewery, pharma | High cube reefer | Insulation + refrigerator eats height |
| Construction site office | High cube | Insulation, drop ceiling, normal room feel |
| Backyard studio / cabin / ADU | High cube | Habitable ceiling height after finish |
| Container shop / workshop with shelving | High cube | Stacked shelving fits cleanly |
| Pop-up retail or food kiosk | High cube | Customers stand inside; headroom matters |
| Mining site bunkhouse / first-aid station | High cube | Site-office standard, R-30 insulation |
| Cottage off-season storage (Sea-Doos, snowmobiles) | Either | Equipment fits in standard |
| Industrial yard, dense steel stock | Standard | Weight before volume; lighter tare wins |
| Trades contractor mobile storage, single 20 footer | Standard | 20 ft HC is rarer; mobility favours std |
| Vehicle / motorcycle storage | Either; HC if motorcycles on a rack | Most cars fit; rack systems need height |
What Ontario Buyers Actually Order
In our Brantford yard, the order mix runs roughly 60 percent high cube and 40 percent standard across the 40 foot category. Twenty footers tilt heavily standard because the high cube 20 is less common in inventory and most 20 foot uses do not need the headroom. Refrigerated orders are almost 100 percent high cube. Container office, workshop, and backyard studio orders are 100 percent high cube. The pattern matches what we see across Southern Ontario, where the buyer mix has shifted toward conversion-friendly inventory over the last decade. If you want to see the full lineup, our range of containers ready to buy in Ontario lists every length and grade we keep in rotation.
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Family-run in Brantford since 1995 · 200+ containers in stock · 4.9★ across 124+ Google reviews · every box graded by a person, walk it before it lands.
Frequently Asked Questions
How much taller is a high cube container than a standard?
Exactly one foot, both on the outside and on the inside. Exterior: standard 8 ft 6 in vs high cube 9 ft 6 in. Interior: standard 7 ft 10 in vs high cube 8 ft 10 in. The width and length are identical at 8 ft wide and either 20 ft or 40 ft long.
What makes a 40 ft high cube cost more than a 40 ft standard?
The high cube adds a foot of steel and a little tare weight over the same footprint, so it sits a step above the matching standard. How large that step is depends on grade, the base container price, the size, and the steel market when you order. On lower-grade wind-and-watertight used units the dollar gap is at its narrowest, while on one-trip new units the headroom upgrade is a smaller share of a higher total. Tell us the grade and your postal code for a real number.
Do high cube containers fit on the same tilt-deck trucks?
Yes. Both standard and high cube containers fit standard tilt-deck and flatbed trailers used for container delivery in Ontario. The extra foot of height brings the total load height up by one foot, which is well within road clearance limits. Low overhead clearances (mature tree branches, garage door overhangs, power lines on residential streets) can occasionally block a high cube where a standard would clear. Our drivers site-survey before delivery and flag any low-clearance routes ahead of time. The actual placement on the ground is the same once the container is off the trailer.
Can a high cube container be modified into a habitable office or studio?
Yes. The 8 ft 10 in interior ceiling allows for insulation, subfloor, electrical, and finish work while preserving a habitable finished ceiling height of roughly 8 ft 0 in to 8 ft 4 in. A finished standard is at the threshold.
Is a 20 ft high cube the same as a 40 ft high cube, just shorter?
Yes, in terms of height. The 20 ft HC has the same 9 ft 6 in exterior height and 8 ft 10 in interior height as the 40 ft HC. The only difference is length. 20 ft HCs are less common in Canadian inventory because most buyers who need the headroom also need the volume, so the 40 ft HC dominates the conversion market.
If I am not sure, should I default to high cube or standard?
If your use is purely outdoor storage with no plan to modify the container, default to standard and keep the savings. If there is any chance of conversion, office build-out, refrigeration, tall cargo, or vertical stacking, default to high cube. The extra foot is the single cheapest upgrade in the container market and the one that buyers most often wish they had paid for after the fact.
Sources
- International Organization for Standardization. (2022). ISO 6346:2022 Freight containers, Coding, identification and marking. iso.org/standard/82754.html
- International Organization for Standardization. (2013). ISO 1496-1:2013 Series 1 freight containers, Specification and testing. iso.org/standard/61917.html
- Container Handbook (GDV). Container types and dimensions. containerhandbuch.de
- Container Management. (2026). High Cube vs Standard Storage Containers. containermgt.com/comparing-high-cube-vs-standard-storage-containers
- Tradecorp USA. (2026). High Cube Shipping Containers: Complete Guide to Dimensions. tradecorp-usa.com
Reach Van Blanc in Brantford
Van Blanc has been supplying shipping containers across Ontario since 1995. We keep standard and high cube units in 20 foot and 40 foot lengths, in one-trip, cargo worthy and wind-and-watertight grades. If you are weighing the high cube step against your specific use, the easiest answer is usually a 10 minute phone call where we walk through what you are putting in the container and whether the conversion math applies.
Van Blanc Ent. Inc. 90 Morton Ave E Unit 1B, Brantford, ON N3R 7J7. 519-754-6844 (cell) or 1-888-509-6658 (toll-free).
Worth the drive to walk both grades side by side in our Brantford yard before you commit. The one-foot difference reads differently on paper than it does standing inside the box.
Placement requirements vary by municipality. A quick call to your local planning office before delivery is the easiest way to confirm what works for your property.